I know we love discussing Jason being hater in Internet (which is very true, and I think he simultaneously does it from both his own name and Red Hood, depending on who/what he hates at the given moment), but I suggest you this: Jason has an anonymous account to defend his favs on internet. Specifically, vigilantes and superheroes. Specifically, his family members or friends.
And no one needs to know that.
Jason, from his fake account: I think Batman fumbled the case, tbh. But we gotta give some respect to Robin, he did great.
Someone replying to him: Right??? Batman is getting old and predictable, lmao
Jason, in the instant: Lol, what would YOU know about Batman. Watch your goddamn mouth. Idiots like you are alive because Batman is in this town.
Random on internet: Uhh, Arsenal? Lol. Isn't that one Arrow's boy that became a junkie, lolol.
Jason, appearing out of nowhere: *five thousand word essay about Arsenal, his merits, and how insensitive society that ends up with passive-agressive "hope it helps!" sentence*
Random hater: Red Robin is easily the most useless bird in Bats, idc.
Jason, spawning in comments: Say that again
Of course, if you try to question Jason about that matter, he will never admit it. In fact, he often switches accounts if he feels like any of Bats are close to finding out who is writing these furious reddit posts, but. But Barbara knows. And every time Jason tries to bully someone in the family in real life, she can't help but tease him subtly.
Jason: Urgh, man, you suck. How could you miss these idiots?
Tim, frustruated: Fuck off
Barbara, in comms: User "WonderSon" would drag your ass for bullying Red, btw.
Tim: Yes, he fucking wouldddd
Jason: ...
Jason: *tired sigh*