Last I checked, most people who voted for trump voted for him because they actually thought he would fix the economy. Only a fringe cares about identity politics.
While I personally believe people who voted for trump were naive at best, it is very disingenuous to pretend like they all voted for him because they hate trans people. Most normal people don't give a fuck about that shit. They just want to live and considering how chaotic the election was for the democrats, it makes sense that more people put their trust in the candidate who was there from the start.
It's a very boring answer, and it is not really an excuse for the current state of the US, but reality is often a lot duller than whatever narrative we like to cook up in our little heads after spending too much time on Twitter.