Who can say it's not possible? DeSantis barely won his last election, and the US southern border is currently wide open, and there has been an incredible amount of people moving into Florida since then, and everyone seems convinced the Democrats are capable of stealing elections.
So could it happen? Absolutely. We should be focused on making sure it doesn't, not worrying what may or may not happen in 2024. It may be a whole new ballgame by then, and if the elections aren't secured, we may not win then, either.
That was back in 2017. He wasn't a rock star like he is now. Also, in the past 5 years, you've had many Conservatives flee blue states to become residents in Florida.