I don't use any Facebook products, I don't buy anything at Amazon, ever, and frankly, I also would never ever spend money for a Tesla.
I don't think making such choices is insane in any way, shape or form.
It's okay to not act rationally or not be sane in all decisions, but it's definitely not normal.
If you want to boycott things based on an abstracted emotional value that's up to you, but it's not normal.
Elon posting on Twitter has very little to do with Tesla cars.
Voting with your dollars is a key tenet of capitalism. If a company is run by unethical people, I sure as hell won't be doing business with them. Especially when there's plenty of competition, like there is in the EV market.
Voting with your dollars based on your emotional feelings of some persons actions outside that product is not normal.
There are many people who confuse the two, and the line is constantly being blurred, but one is normal, the other is not. Everyone is free to do non-normal things though.