One of the biggest problems the GOP-hell, the conservative movement today-has is that so many of the younger members are off-putting weirdos that, to use internet terminology, "scare the normies". DeSantis has zero charisma, is genuinely evil and comes off as incapable of behaving like a normal human being. I know a guy at work who like Matt Gaetz, but I think most people would immediately recognize that he's a creep. Like if the villain of a college sex comedy grew up and became a politician. Marjorie Taylor Green is a conspiracy theorist who rode to infamy by jumping onto Qanon and is pals with Alex Jones. That shit turns off moderate voters. This explains why so many Trump endorsed/Trump centric candidates have lost elections.
Even the hanger on types and pundits are too out there for more moderate voters. Tucker Carlson is not only a massive hatemonger, but was humiliated by Putin during his attempt at an interview, has weird views on masculinity (a lot of these guys do) and has seen his star fall some (when you are reduced to interviewing a man who calls himself "catturd", you are coming off as washed). DeSantis actually getting some pepe/groyper dudes to work on his campaign backfired, as it made anyone with half a brain look at it and say "why am I seeing a literal white supremacist symbol in a political ad?" Jack Posobiec, Tim Pool, Steven Crowder etc-no normal human being is going to look at these dorks and think "wow, these guys are cool!" They are either weird ethno nationalists, self hating closet cases (Crowder and Benny Johnson) or grifters who don't actually believe in anything (Pool and Alex Jones)
Vance is literally one of those guys. Mike Pence is awful in every way, but at least tried to come off as a normal human being. JD either doesn't know how to or forgot. Every time he tells you his views, he comes off as an equally evil but somehow weirder DeSantis, which is something I previously thought was impossible. Also, while he did win in my home state, it was by 2%, which doesn't excuse him winning but does paint a bigger painting of what a lot of people here probably think of him.