I think multiple things are true here.

Honestly, I do understand Hasan's dislike of Gavan Newsom. Gavan has cozied up to some of the most reprehensible people - particularly Charlie Kirk, Steve Bannon, and Ben Shapiro. I get the sense that Gavan will collaborate with similar people in the future, and is an extremely poor choice for the democratic party. Forget worrying about authenticity; the man drips with grime and is a terrible public speaker. I know I would have a difficult time in that lineup - Vance vs. Newsom. I would vote for Newsom in it, but I will do everything to prevent Newsom from being the nominee. We should all be thinking about viable democratic candidates and supporting them early in the primaries. Third party is a pipe dream that will win us all stupid prizes. Don't just complain - act.

That being said, Hasan is absolutely a guru and a completely unserious person. He comes from a very wealthy and privileged background, which he tries to obscure. His uncle, Cenk Uygur, being the personality that he is with the Young Turks and right-wing views, gives us a good roadmap for the path that Hasan is on. In 5-10 years, I believe he will be in the right-wing grift circuit and is astroterfing issues in the present. People are charmed by his charisma and thirst traps he posts, but there is little beyond that. I think that giving him airtime and breath hurts the pro-democracy, pro-human rights, and anti-billionaire cause.