Sorry, I’m genuinely confused here.

I asked his defenders if they support his views on race science, and brought up the possibility that people dislike him for reasons other than the 2017 event.

Your position is that it’s impolite to bring up a writer’s body of work because… why?

Edit: It’s kind of hard not to interpret your post as “I believe in race science and it makes me uncomfortable to be asked a question like that so plainly, so I will fall back on calling you rude.”