If that's meant to be the DNC, okay.
If that's meant to be people who made an argument for coalition politics and not straight up forfeiting an election to the worst presidential candidate anyone could find lying around to stuff into a diaper and a suit and put behind a podium.. that's not really the same thing.
Gavin Newsom is not, at the moment, running for president. He's not sitting opposite some extreme right-winger serving as a disappointing but necessary defensive line between us and things getting much worse. He's an asshole who happens to be a Democrat and is the current governor of a state where he's actively making things worse. He, like Harris, would clearly be leaning toward the right to try to win center votes.
The reasonable strategic move to make for anyone who wants the government in the US to shift to the left is to make it clear that while his humiliating Trump is useful, he is not a viable candidate. Supporting him now would be backing a lame horse that's literally still in the stable during a time where we should be finding the healthiest, fastest horse we possibly can. That is not the same as if he were in an election right now and were the only way to prevent a Trump from getting into office.
I'm trans. I hope Newsom falls off a cliff. But if he had been running against Trump instead of Harris I would have held my nose and checked the box, because strategy isn't about throwing a fit until you get the scenario you want, it's about doing what you can with the hand you've got.
Right now what we can do is toss his ass away and draw another card from the deck before we end up being forced to play him.