You're proving my exact point, you're just misrepresenting what Tony did and exaggerating it to look worse than it really is.
Like "radicalizing Vulture?" The hell are you on about? Tony didn't even know the guy existed, it's not his fault one of the people in charge of Damage Control wanted to be a jerk to Toomes, Tony has involvement in that whatsoever.
And he didn't pass off Mysterio's work as his own, in Civil War he straight up says he only funded it, never once said he created it, Mysterio got fired because Tony jokingly pointed out the acronym for the device spelled out barf and he flipped out over it, and one of people who was working with Mysterio was one of the guys who was helping Stane kill Tony in the first Iron Man it's not too much to believe that's true for a bunch of the rest too, by this point you're trying blame Tony for the fact not everyone who worked his company was a benevolent individual, as if he had any control over that and if you really think someone in his position was directly handling the hiring process for the gigantic multinational company you are delusional.
And now you're blaming Tony for the Snap.
This is exactly what I mean, you just want to blame him for everything to either downplay or completely ignore anything good he's done.