The only thing is these wild mistakes don't happen in isolation. Just in the last 18 months (and this isn't an exhaustive list) you've had this, Moutinho's "handball" at City (of course, we lost 1-0) and Pogba's non-foul on Neves which led directly to a goal (of course, we lost 1-0). VAR should have easily overruled all of those decisions as they were obviously, unequivocally wrong. Instead none of them were overturned. They all happened against arguably the three biggest clubs in the league.
I don't blame people for asking questions, of course some will take it waaaaaaay too far but that applies to every club, as football fans gonna football fan.
A large section of Arsenal fans hilariously think there's a 20+ year refereeing conspiracy against them if you want to go down a real weirdo rabbit hole! Extending to them thinking Martinelli shouldn't have been sent off against us last season and if he played for any other club then he wouldn't have been.