I used to be very certain about the "Desantis is the effective fascist we warned you about" thing but more and more his buffoonery comes out, and I don't think he'll be president. That said, he's being pretty effective in Florida despite his buffoonery.
A major problem with DeSantis is that he'd have more support from the military and the intelligence community than Trump, which is a massive problem if the GOP ever tries a more serious coup than Jan 6. I also think he's an actual true believer when it comes to racism and transphobia. Trump uses these strategically, DeSantis seems to have a real, burning wish to exterminate people.