you can see what you like in fiction, blah blah blah, projecting onto characters is fun, etc
though it really seems like i watched a completely different movie from everyone else's deadpool and wolverine. they hate each other??? logan's a short fuse who doesn't control himself???
logan doesn't attack wade or the bartender despite the insults and the manhandling. no one's afraid of him, everyone stayed put instead of running.
logan outright says "talk about something else". not "shut the fuck up", not "you are so fucking annoying". a directive to continue yapping. just not about the suit. that's literally "keep going". he listened for however long they were walking and in the car, and he was actually LISTENING. he wasn't tuning it out. he wouldn't have known about vanessa and the avengers and the previous xmen adventures if he didn't care about what wade was saying.
all the "insults" that are actual insults only happen when wade's killed someone--after johnny dies, after nicepool dies. logan calls him an asshole after the first cassandra meeting, but in the context of his yapping having just killed johnny and nearly themselves too.
but he immediately asks for his input and then lets him yap again in the diner and all the way to the car fight. he doesn't use insults at all until after wade gets johnny killed, even though wade starts out insulting him in the bar and immediately in the void with "ape". though was he insulting logan or was it a compliment to his inhuman half, designed like an insult? logan's the one who gets down on all fours like an animal in the first fight scene, after wade's said "this is gonna be good". from how easily logan takes down sabretooth, we know that fight was pure fooling around.
logan's not mad when he finds out his universe can't be fixed, because he'll happily trade his past for wade's future--twice, going in the reactor and again when he doesn't demand to return to his own universe. a world without wade isn't one he wants. he makes to walk away because he needs to know if wade will call his name, just as logan called wade's in the reactor. and again, wade's an idiot and annoying in the reactor because he's about to kill someone again--himself.
at the end he says the avengers would be lucky to have wade. that's sincere. he was going to walk off, but chose to turn around and stay with wade. not because he had nowhere else to go, but because he likes the guy he just complimented. when meeting al, wade's throwing gross nonsense and logan is FOND and laughing along. that isn't disgust or frustration.
this is without getting into the motif that "taking the piss", aka insults aka verbal assaults, is "pulling your leg"--a joke. it's not meant seriously. it's flirting, foreplay, feeling each other out: physical violence is sex; verbal violence is first base.
so a mean joke isn't seriously like that but it very much definitely IS...."""like that""", in all seriousness. if you're insulting someone, you're "giving them an excuse", a come on to fucking go. an invite to...come....at? on?.....you. wade and logan both see right through the fourth wall, so this isn't only metatextual but also literally textual. they know what they're playing at.
a joke can also be an excuse to say one thing and mean another, like nicepool claiming to be nice while actually being rude. so if you act like you're mean.....you're saving the good stuff for special occasions. for someone who wants to have a go at you. it's why wade gets all breathy flustered in the car as they're....not playing nicely with each other. you gotta be....seriously mean.... if you wanna get under someone's skin....to live rent free with them. like family does. it's a callback to dp1: if you're paying for it, then you're only renting love, it's not a real happily ever after.
there's also a motif going on with costumes and masks making you "a different person", hence why wade and logan have radically different personalities in and out of their suits/masks. it's why wade takes off his mask to say nice things that he sincerely means.