“Lib purity” is not being against a guy who’s hard right?

No. "Lib purity" is dismissing all information from a source you disagree with, even if some information coming from them is factual and truthful, specifically because they're a chud. I stress again - we are against the guy, overall. But just because HE said something does not make that something untruthful. We CAN engage with the information critically. We don't live in a world where every source is a ML and we can just consume information without fear of it being compromised. It is no reason to not post good bits. And by the way, I watched the video - there is nothing reactionary in it. If there was - I'm sure there would have been a disclaimer.

Imagine canning Lenin because he supposedly had some socially conservative takes.

We did not ignore completely what you were saying, we addressed your issue with not posting Berletic's takes on Ukraine and explained why this sort of thing is dogmatic.