DeSantis is just a moron with a Harvard degree, he could have backed off on Disney but claimed victory and the low info base of GOP voters would have been none the wiser, while he'd still retain Disney support for his candidacy most likely. Truth or accuracy doesn't matter so much to voters, as long as you say something enough times confidently enough, Trump's demonstrated that these lies just get accepted as truth by enough people. Instead he's ended up tying up millions of dollars of taxpayer money into a legal battle with Disney... a company that is notoriously good at winning it's legal battles... while costing the state billions of Disney investment and just saw Disney's plans to relocate thousands of it's white collar tech workers to Florida scrapped in an instant.
Even if you've got some high-info GOP voters out there who may have considered him... if you're a fiscal conservative, you'd likely be seeing him as a clown who's blowing his state's treasury on these idiotic battles he's picking to get national media attention. And if you're a pro-business conservative, you've just seen him go against an American business institution and one of the largest employers in the state.
This is a media created mess - treating Trump as a serious candidacy has permanently changed political discourse in the US. He has a real cult of personality (don't ask me how lol), I'd say 20-30% of voters are pretty firmly in his grasp. It's got the GOP in a race to see if any candidate can "out-Trump" Trump in primaries. And then the question has to be asked... does the Trumpiest candidate that makes it through primaries have a chance at winning moderates over with a moderate democrat running against them. Left-wing voters will hold their nose and vote against anyone Trumpy, even if they're voting for a democrat that's about as left wing as George W Bush.
I don't think America can clean up this mess without things getting a hell of a lot worse than they already are. But even then... I'm not so sure - we saw people storm the US capitol and most of the punishments we've seen so far have been a comparative slap on the wrist.
Are Americans too complacent to demand a government that actually works for them? Tbh, I think so. This was a country founded on a protest of lack of representation despite high taxes - look at California, it's got the most democrats AND republicans in the country. It's the economic backbone of the US. And for months it had just 1 senator representing it's interests in the senate. It has the most members of the house of representatives and at the same time is the most underrepresented state in national politics per capita. 12% of the US population controls 60% of the US senate.
It's a broken, outdated, and anti-democratic system of government that goes around acting like it is the bastion of freedom and democracy.