i don't know about you, but i generally do not want to work with people whose political beliefs include that my country is illegitimate or that hitler's rise to power was caused by the polish and the british doing bad things to the germans.
well, some time ago i had a deeper look at his social media activity (including such niche things like devuan mailing lists or facebook), and that's my conclusion; and it's really not just because of the extremely stupid anti-vaxxer views he pushes.