I'm reminded of the old George Carlin bit. “Think of how stupid the average person is, and realize half of them are stupider than that.”
So yeah, at least half of America's population is stupid.
But since you seem to be under the illusion that "over half of America's population" voted for and/or likes Trump, that's unequivocally untrue. He lost the popular vote both times. And even if you want to pretend nonvoters like him, his approval rate has never eclipsed 50%. (Biden's did, though). So no, you aren't in some sort of silent majority either. The only reason your guy won is because 200+ years ago the founding fathers made some concessions to slave states to get them in the union. That concession is called the electoral college, and it continues to give racists a disproportionately large say in our democracy.
As to the deplorable comment, I tried very hard not to judge those who voted for Trump in 2016. He was a bit of a wildcard -- I could see how somebody could anticipate all sorts of different policy outcomes. He was clearly unqualified, but perhaps he was going to let qualified people make decisions for him and merely act as a figurehead/manager.
But we know who he is now. He's a racist, misogynistic, narcissist who is willing to burn the legacy of American democracy to the ground if it means he can escape the consequences of his actions. Anybody who continues to support Donald Trump is, in fact, either completely divorced from reality or any sense of ethics. Or both.