That's a complicated question. There are a number of documented moral offenses from Trump like this one:
Trump Pays $2 Million to 8 Charities for Misuse of Foundation - The New York Times The moral cognitive dissonance required to support Trump is not as different from many other forms of moral cognitive dissonance that people display in other areas, which has been normalized by society, and so is not called out in the same way as it is for "Trump supporters". Willful blindness to moral offenses is itself a moral offense, so lack of judgment and lack of character have blurred boundaries when supporting corrupt leadership. There were moral fractures in the thinking and paradigms of my ex that enabled him to choose willful blindness regarding Trump. It doesn't mean he was evil. Also, he had a friend who was a really nice kid who actively supported Trump because it gave him a feeling of power to piss everyone off, but believe it or not he was a kind of sensitive, nice guy, but just depressed and lost about life. He did brag about clearing a room of people when he would go on supporting Trump. People feel empowered by rudeness and offense in this culture - it becomes a short-cut to power of other sorts. Those kinds of people would see the hypocrisy that is brought out by people who reject Trump supporters but possess moral cognitive dissonance themselves. However, seeing that in others does not justify support of Trump. That's where reasoning is left behind. One of issue that people may not realize is that when someone has trusted family members who support Trump or anyone like him, they may support Trump as a secondary expression of trusting their loved one. To reject the politics within established trusted relationships is quite difficult, so I don't think that Trump supporters are all overtly evil. I think it is a moral failing to actively support someone who's actions are immoral even given contexts like I describe here, but humans do it all the time, and I've experienced some of my own moral cognitive dissonances and failings especially growing up, so it's more of a cautionary tale than a way to feel morally superior.