Then he’d explained that—after stiffing people for years—they were often willing to settle for a reduced amount ! This a man that embraces the seven deadly sins” with a smile from ear to ear and you folks want him to run the country!
You are confusing multiple issues here.
You assume that folks deny he is a bad guy; I do not know many, if any, that deny that.
As I have said time and again on here, people voted for him because he is blunt and speaks his mind and is an achiever. Being successful in the New York building market is not for a passive person at all.
People wanted a non-politician and, sure, some may think the USA needs to be run like a business -- but I think that was too small to matter.
Many, many people in history have been very flawed and still led people and been successful. Whether you look at Solomon, etc., or Ford, etc. or any other field. So, certainly there are examples of that in politics -- including Presidents.
I think a lot of folks are tired of Trump and wished he had decided not to run. But I think a lot of them have decided that the country was doing really well under Trump, especially pre-Wuhan.
But the basic answer to this question is the same as the problem you guys have: there is no viable alternative.
The Right had 4 years to get a better person to run, they did not; the Left as well, they did not.
So, now you are stuck with these guys.
No solid person from either party is switching parties.
If, I do not know who -- pick one, DeSantis, Haley, Scott were to beat Trump out and Biden were incapacitated or got impeached, etc. -- would you ever consider voting for the Republican person?
No matter who the Right runs -- the Left will vote for their person and vice-versa.
So, I do not think your premise about a flawed candidate holds up when considering a person's choice to switch parties -- especially as far Left as Biden is, etc.