[Edit: I meant Trump, and I was wrong - see below. Technically Thiel is also allied with Pence, who does believe in Conversion Therapy, but that wasn't who I meant. I apologise]
However, from the same article it appears that Trump has vowed to sign the FADA, has said he supports North Carolina's anti-LGBT law, and has said he would strongly consider appointing Justices who would overrule marriage equality, which seem like legitimate causes of concern for the LGBQT community.
[Edit: Arguably Thiel is allied with Pence as well, who HAS advocated Conversion Therapy, so what I wrote was technically correct, but I did indeed mean Trump when I wrote it and I was wrong]