This post is really narrow-sited in terms of economics. The argument is essentially that "Absentminded regulations forced those poor truck makers into building bigger trucks and then consumers just had to buy them". Unfortunately, that's not actually how buying things works. The market being willing to buy behemoths is what validated the product experiment that the truck makers ran and is a much more potent force than what a company decides to make.
The real issue is thus: Trumpers don't actually care what happens to the world or the people in it and if something is "bad for business" then they'll do anything to get around it - regardless of the ethics. People should not be blundering idiots that are continuously drawn towards the next shiny thing; they should be accountable for what they choose to do.