Lincoln himself said that he would preserve slavery if he could. The civil war was never about cleansing the sins of empire. After it was over, they wanted to resolve the contractions to the absolute minimum possible
Speaking personally, I generally like him, but again, hold a lot of suspicion toward public personalities. I find his success suspicious, but recognize that until further notice, the suspicion is only founded in vibes. Other than that, he has a pretty clean track record. The most egregious thing he's done in my eyes is glaze Bernie Sanders and AOC, and offer them time on his platform.
The answer to this may be abundantly obvious, but: is there anything preventing Americans from visiting Canada, buying a Chinese EV there, and then driving/transporting it home?