alright here we go. discord’s behavior in season 9 did NOT come out of nowhere and he did NOT regress in terms of character development, despite what so many people seem to think. everything he did was perfectly in-character and it made total sense with the progression of his personality and mindset
first, i def do NOT think that he got off scot-free with no repercussions. he got called out VICIOUSLY & MULTIPLE TIMES in the ending of the end. they didn’t treat him the same way they treat starlight when she messes up; he got properly reprimanded, even though his intentions were nothing but good. and he deserved this! he def made a mistake here but i also think he both made up for this mistake and got proper consequences. is the endangerment of his friends and the world he’s come to care about not enough for yall? if it wasn’t, the characters actively and consistently tell discord he messed up big time. is THAT ENOUGH
second, yes, it was absolutely a stupid decision. but acting like the writers suddenly made him stupid is just incorrect. discord has made stupid decision after stupid decision since SEASON 2, and in-universe he hasn’t been “good” for more than a few years (idk how much time has passed in the show but thats my estimate). he’s ANCIENT, he’s thousands and thousands of years old, do you really expect him to turn into a complete saint who makes no mistakes in just a few years?
discord isn’t stupid, but he IS overconfident. that’s why he makes stupid decisions; it’s because he thinks he can just fix everything with a snap of his fingers. and usually, he’s correct; he’s incredibly powerful, and his plan with sombra worked! discord would have been able to step in if things got too nasty. which is WHY he’s overconfident; he boosted twilight’s confidence, but he also boosted his own confidence, as well
third, his behavior in s9 shows that he really does care about the mane 6 outside of fluttershy. he saw that twilight was a nervous wreck, and since he’s literally the embodiment of chaos, of course his idea of helping her out was NOT simple reassurance. discord knew that twilight does best with concrete results, so he decided he would create some situations for her to get concrete results out of. it’s a very roundabout way of showing that he cares, and it’s a pretty dangerous and foolhardy way, but that’s exactly what he was doing
discord is a complicated character. he’s become a kind person to the people he cares about over the course of 8 seasons, he’s just REALLY REALLY BAD at showing that affection. he doesn’t like to be explicit and upfront with friendship, so he has to figure out some convoluted way to do it, and when he inevitably fucks up, the narrative rightfully punishes him. the show is over, but he’s still got a lot of growing to do, and that’s okay, because if he was a model of Goodness by season 9, THAT would have been bad writing