I think it pre-dates Trump. I'd tie it to the advent of social media, and the way that tech and those platforms make it seem easier to unload on someone who isn't actually there in real time--kinda like we say all kinds of things, protected, in the car, unheard by the other, to the other, that we would never say to someone's face, or at the very least, in a manner we would never use to their face. Like, I just don't curse at slow walkers the way I do at slow drivers. Zerlina seems like she's in a bubble, doesn't get out much, and so is just talking for soundbytes she knows will outrage screen world. There's no IRL accountability for her.