It's quite well known that rich people are the least affected by policies like anti-LGBT. Thiel may not personally have much to lose if gay marriage was banned, but for many people it makes a huge difference. For example child rights, tax advantages, end of life decisions.

Anyways, you're actually very wrong - people ARE trashing rights. People in Trump's camp ARE denying LGBT their humanity. Evangelicals for example. How about "kick out every muslim"? The constitution explicitly doesn't call for a religious test to apply.