Yep, I think Dick definitely should have included Tim in the decision making process, but I guess if he was certain Damian needed Robin, there wasn't much of a process to speak of - especially since Alfred had already handed the costume over.
Tim had earned Robin though, and I feel bad for him.
But also, Tim was kinda a jerk to Dick and that's rarely mentioned.
Also, a lot of posts that 'fairly analyse' TIM'S faults during Bruce's trip of the magic school bus rarely do a unbiased job of it. They're always vague and saying Tim shouldn' have fought with Dick or Damian. Dick's mistakes on the other hand are a lot more detailed and descriptive.
Let's play an Uno reverse and see what comes up, huh?
One, it bothers me a little that Tim was never shown worrying about Dick's mental/emotional state (or even concerned he was grieving too) while DICK on the other hand kept trying to get Tim to talk to people and maybe go to therapy. While Dick had been emotional supporting Tim for years, Tim could muster up a little consideration for Dick's feelings? Like, physically fighting Dick was a real arsehole move but so was just abandoning him AFTER he said (for the first time) that he needed Tim's help.
Two, Tim's the one who let Jason out of prison before Battle for the Cowl. And Dick had to deal with the mess that created while Tim was off on his Bruce quest - and it was a mess alright. Jason was quite unambiguously written as unstable and mad, he went on regular murder sprees and had nearly killed Damian and Tim during the Battle for the Cowl before Dick arrived. And then he came back to Gotham twice and killed a bunch of people and nearly got Dick and Damian too. Overall stupid decision, but it's also kinda shitty that Tim just left the whole mess to Dick without any kinda of apology or acknowledgment.
Three, Tim didn't tell Dick he knew Bruce was alive even though he had multiple opportunities to during Blackest Night. Like, WTH Tim? Dick deserved to know. Plus, would have made things easier than dealing with the Ras.
Tim couldn't even explain keeping quiet to himself - he knew he should have told the others, but just didn't. He even said 'Alfred deserves to know' (again, example of the robins never really holding Alfred accountable) but didn't think Dick deserved the same courtesy? Dick, the man Bruce had raised from 8 to 18. He didn't think Dick might want to know that the man he was so unfailingly loyal to, a man for whom Dick had sacrificed his life for multiple times, the man whose much dreaded mantle Dick had taken on and whose son he was raising, was alive?
I don't know, but IMO Tim came off pretty badly in Red Robin in relation to how he treated his family - immature, thoughtless and self absorbed. And I can cut him some slack for that - he was young and grieving. But the number of fanfics I've read that blame Dick and make him grovel for forgiveness and get yelled at by Jason or Bruce of all people!? Like, Jason, you tried killing Tim multiple times and Bruce, you took Robin away from Dick when he was the one who created it (and did too many shitty things to mention here)! Neither of you get an opinion on this! And Cass, sorry, but you just weren't around for that arc - DC being shitty as usual I know, but the fics don't change that. Instead she just strolls in after Bruce comes back.
Also, while we're on the topic, I don't think Cass could have taken over Batman? Like, sure, she'd gotten better, but she was still nowhere near the level she needed to be as a detective or leader. Can anyone really say she'd have been able to take Bruce's place on the JL or even just teach Daimian?
Also, how is it that any analysis always makes sure to talk about Tim apparently loosing everything to excuse him, but never mentions Dick's own situation?
I use 'apparently' because, as in rarely acknowledged, most of the people Tim lost had already come to life by the time Bruce died (Steph, Conner and Bart).
Dick just went though Blockbuster PURPOSELY destroying his entire life (blowing up his apartment in blud and killing all his friends and neighbors and destroying Haly's and killing most of the performers), then Tarantula killed Blockbuster and raped Dick (for which he blamed himself). Oh, and in the middle, tarantula interrupted a date with Barbara and kissed him, for which Barbara basically victim-blamed him (asked why he 'pretended' to be surprised when random people kissed him) and broke up with him. Then he went undercover with the mob and Slade to get leverage on them and force them (and other major villains through Slade) out of Blud and give the city a fresh start - during which all his friends thought he'd gone bad and even Clark suspected him. Then Slade destroyed Blud BECAUSE DICK OUTSMARTED HIM (in Slade's defense, it was super OOC writting because in the previous issued he'd JUST agreed to protect Blud from major villains and Slade's whole thing is 'my word is my bond'), Dick went racing into the radioactive ruins (despite Clark literally picking him up and putting him outside the city). Since Slade had targeted Blud to get back at him, Dick blamed himself and was depressed and passively suicidal from that and from letting Blockbuster die (even Bruce noticed). THEN the crisis happened and he went undercover in Blackgate, his extraction got screwed up and Dick was tortured on fear gas and by various villains for a week before nearly being lobotomized. Then he managed to escape only for Bruce to die - forcing him to give up his fledging new life in New York and come back to Gotham to take up a mantle he hated.
Dick didn't even get time to mourn before everyone (Tim especially) insisted Nightwing wasn't enough - that Dick had to take up Batman - despite Bruce telling him to let the mantle die.
Dick lost his original home and family, his city and finally his father - and, except for Bruce, the others were dead BECAUSE OF THEIR CONNECTION TO HIM! He was basically suicidal in the middle.
Damian was literally the only thing he had left of Bruce. Is it really unreasonable that he'd want to stop him from going back to eh league of assassins?
Also, let's remember, Bruce actually raised Dick for most of his childhood vs the the maybe six months he actually raised Tim and maximum of four years Tim was robin. It's always confused me why fandom thinks Tim grieved more.