The irony is that the people I find to be most toxic in video games are the children. To the point that in a lot of "Looking for Group" Discord channels you see people saying "18+ only".
It's actually probably the same problem drivers face. When driving, your brain kind of ignores that other normal humans drive the other cars, and therefore you are extremely judgemental of their actions, because you expect them to be perfect. This is why so many people road rage.