You could argue that having a presence at the RNC as an openly gay, wealthy and successful person could make a strong counter against the prevailing GOP beliefs on sexuality
That strategy did not work well for Ernst Röhm. Given that the entirety of Trump's campaign seems to be one of political expediency, I don't see Thiel being anymore than "Trump's best friend is gay, so of course we're not against gay people!".
> You could argue that having a presence at the RNC as an openly gay, wealthy and successful person could make a strong counter against the prevailing GOP beliefs on sexuality
You could also argue that he has a net worth of $2.8b and will gain massive tax cuts if trump is elected.
Thiel is endorsing the party which is well known for its racism, its xenophobic rhetoric, its hatred for gays (as evidenced by policies and actions). Trump built his platform on fear and hatred, and he chose a running mate that is known for advocating a dangerous, dehumanizing pseudo-science.
The only message I'm getting out of Thiel's endorsement is greed.