The way payment processors are able to control which art can be monetized and which can not is not only questionable but I think that we need regulation for that - not only in terms of money laundering but that they need to process payments for non illegal goods and services and can not determine by themselves what they are willing to process and what not.
Latest victims: itch.io and Steam
https://www.rascal.news/itch-io-delists-bans-games-under-pressure-from-payment-processors-and-an-australian-anti-porn-group/