Orange > Romney is just one example with appeal for moderates
I am blaming Romney for not fighting for his positions the way Trump does. If there is a moderate who will fight for his moderation, I am willing to listen. Also, Trump’s positions are rarely extremists. Sometimes he is direct calling spade a spade or different by trying new approaches. In many economic matters, he is quite moderate and populist. For example, his tax reform re-distributed a lot from rich people by cutting SALT.
You are right that he has extremists among his followers. But they are “among” not the only ones. After all, about half of the people voted for him.