He's extremely arrogant which is one of my least favourite traits a person can have. It mostly irritates me that people compare him to Carl Sagan because they're both scientists but Carl Sagan preached love of everyone and living for the present and future and tolerance of other beliefs (from what I've seen, there's probably some not-so-nice points in that) whereas Tyson degrades anyone with faith in God and the most influential thing I've seen him say is calling out two very isolated instances of sexism in the past.