It doesn't actually. Trump has some rare ass charisma that allows him to avoid everything. DeSantis on the other hand is as slimy as they come and doesn't bother to hide it outside of the Florida swamps.
Ironbite-hence why even if he wasn't going up against Trump, he wasn't gonna be the nominee.
Who else would have been? Or are we assuming that someone who didn't run, would have done?
Remember, DeSantis used to be far more popular than he is today.
(Or, to put it another way, everything you just said about DeSantis
also applies to Trump. That "rare ass charisma" you cite is just our collective best response to "how on earth does Trump get away with being as slimy as they come and not bothering to hide it?")