"I don't care for Hitler's rhetoric, I just voted for the Nazis because I think he has some good ideas about infrastructure and I like his jobs plan" doesn't exactly come across as sympathetic. Especially not after it becomes obvious where the trains are going.
If you're a conservative or a Republican who supports Trump for his politics alone, or because he was the R and you hate the D, the moral thing to do as of January 6 is to disavow Trump entirely, and look for another candidate who supports his views, or perhaps consider supporting a third party. Not to dig in and continue making excuses for him and his supporters.