Not if the debate is conducted in civil terms. There is no indication that thiel will start shouting and calling names. However you're suggesting that people should be preemptively removed from debate. That's evil.
Thiel is though actively supporting someone for POTUS who has made jingoistic, racist and misogynist comments and stands by them. It's a discussion worth having. Saying that is "evil" is a bit over the top - Thiel is a rich and powerful person by any definition; he can more than handle some criticism.
