I could guess why: - Thiel is a founder of Palantir, a.k.a. the private branch of the NSA. - He also has strong vested interests in the health of hedge funds

I could guess why: - Thiel is a founder of Palantir, a.k.a. the private branch of the NSA. - He also has strong vested interests in the health of hedge funds and the financial industry, as well as strong opinions favoring deregulation. - He does not believe in global warming or the urgency of combating it. - His statements in the past have shown lack of respect/consideration for minorities and women.