You are speaking a lot about what a Centrist is to you. There is an irony to that and I implore you to recognize that. They are not a homogeneous group. You don't like the image you have of them that is largely manufactured of old pictures of your enemies spun into straw.
I'm Canadian and voted Liberal in the federal election, but I do understand US politics to a degree. I thought Trump was an absolute fool, and fools do so love their own. I understand to some degree why he won, though I feel voter apathy played as large a part as well.
Regardless, if I took a stance that would be typically right-wing, would that be me defending them? No. You can arrive at the correct conclusion for the wrong reasons. You can also follow your heart and feel that you've been nothing but good, and royally fuck things up.
For example, I gave the example elsewhere in this thread, but I believe in much tighter immigration controls, if not outright eliminating most of it for now. You may look at that and call me a racist. You would be wrong. The race is irrelevant, and it's an environmental and economic stance that led me there. Our current immigration policies allow pushing down the minimum wage, makes UBI more difficult (if not impossible) to implement, and allow countries that are outstripping their resources to simply place those people elsewhere instead of dealing with their population issues in a realistic way. This is one of many things that has also irreparably damaged the environment.
Something done for good reasons is having bad knock-on effects and we should adjust things before it gets worse. In my experience, a Centrist gets to say "right idea, horrible implementation, let's fix it" instead of just clinging to an ideal.