That second one is demonstrably searchable (he gets all of the top 5 results) and not banned. Maybe a bug, maybe an erroneous DMCA takedown that was reversed; who knows. Where's the political persecution?
As for the other guy, I'll just leave you his own video on the subject to help you decide on your own whether his story makes any sense: https://www.youtube.com/watch?v=wlmGvQln2Aw&t=835s (My opinion: he deleted his own tracks to generate a fake persecution controversy. The absolute lunacy of what appears to be a white guy insisting that they banned him because he's mixed-race is ... fascinating.)
Well, the phrase "I think that workers should own the means of production" indeed do not sounds as bad for me as "I think some ethnical groups are inferior and we should get rid of them". I perfectly understand banning the second phrase and not the first one.
Where are you hearing this? I actively follow all bandcamp news to an almost obsessive degree and have not heard a whiff of this. The explanation could easily be the delusions of someone who’s soothing their own ego after getting the boot for legit TOS violations.
I guess many people will cheer that on these days, though. Conformity is the new punk?