And well it’s not as if boycotting US companies will effect Trump
This is incorrect. Trump was brought into power by Silicone Valley (predominantly, not exclusively) money, Musk, Bezos, Zuck, Peter Thiel.
Just look at this picture from FT.com. Value of Silicone Valley stocks are equal to all European stocks together. If there is a hit to them, Trump&Co will be removed pronto.
Of course we can't boycott everything, but deleting Facebook account, not watching Netflix or Amazon Prime and buying from other retailers, not buying Tesla is absolutely possible and a small price to pay.
Every little helps, a few of us can't make much difference, but the entire Europe boycotting Tesla? or pausing Amazon/Fbook for 3 months? that would be huge.