"Truck or not truck" is plausibly a political identity matter, but "truck" is not a brand. Such people will like a truck from any truck company, if that truck is perceived to be big and manly enough.
The line "because people don't often act on their beliefs" is what I found most egregious in regards to the automotive industry because, yeah - I think lots of people do purchase vehicles based on their beliefs (ideals). I shared some learned history and lived experience around that topic to rebut.
Not looking to change anyone's world view with my comment here. I don't think I'm too far out-of-line with I'm saying: many people do buy cars based on their ideals (beliefs).
This is not to say that Tesla won't suffer for Musk-induced political reasons. But I don't think this is the primary mechanism behind Tesla's downfall. Rather, I think Musk's political flailing has punctured his reality distortion bubble, so Tesla is returning to the value it rationally should have been at the whole time. It has always been a fringe manufacturer, propped up by unrealistic fantasy about the near future.