Being on Parler is inherently a bad look, but the stuff in the OP does only appear to be that site's equivalent to retweets, and also possible to misinterpret, rather than the man spouting/posting things himself.
I admittedly very much just want to give him the benefit of the doubt because I like his work. It has been widely known for a long time he's a conservative christian, and we all know that group of people overlaps strongly with Trumpism. It's possible (I hope at least) that others he knows lead him to be on that site and being an older person he doesn't fully understand the repercussions of his retweets, or presence there.
Again though, I know I'm giving him an extreme benefit of the doubt here... I just really want this to not be true.