Twitter didn't make them this way, Elon didn't make them this way, Trump didn't make them this way. All those people/things did was give them permission to be this way in public.
I hate to inform you of this, but the fascists in your families, your work spaces, your social circles have always wanted this, have always intended this, have always thought of the other as less than human. They were just afraid to tell you because of social consequences. That's what changed mate.