When did this become normal? Just another sign of political polarization? I drive a Tesla and a Beetle. I couldn't care less what cars others drive, Teslas or not. (Apart from the novelty of "hey that's an interesting car, what's it like?" sort of stuff)

I find that kind of thing to say more about the people doing the disapproving than of the ones driving certain cars. Doesn't it sound absurd to "disapprove" of people based on a car they drive (an entirely personal choice of product that doesn't affect anyone/anything).