A guy who is worth hundreds of billions, and is willing to give Wikimedia a billion dollars to change their name to dickipedia, doesn’t care whether he makes an extra hundred from you or not.
Just buy the car you like.
Which car you buy makes a significant difference to your life, but virtually zero difference to shareholders of the automaker, so buy whatever car you want instead of spiting yourself.
while this is true for a single person, of course the opposite is true if there is a significant movement (like the one that appears we are experiencing) if significant number of people stay away from a certain car brand.
also, on the personal note - I am a Tesla owner and have planned on replacing my 11-year Tesla S with a new Model Y, my wife said “over my dead body” :) hence, even on personal side the car buying can be a moral issue - not necessarily thinking “CEO will soon be homeless due to my purchase of lucid vs model y” but "I won't contribute a single penny to perhaps one of the most vile human beings that currently walks on Earth
Yet I believe that when enough individuals make the same choice—whether at the ballot box or with their wallets—it creates meaningful impact. Collective consumer decisions send powerful signals to companies and their leadership, just as collective voting shapes our democracy.