Many porn actors have been blacklisted from the US banking system.
Conservatives got tired of losing US supreme court cases over censorship laws and regulations and shifted to enforcing their morals via the private banking system.
Ever notice that there's no law or regulation requiring banks provide even basic checking service to anyone who can establish a valid identity?
Going cashless cannot happen unless either the government starts providing essential (checking, savings, credit card, and home/personal/auto financing) services they are mandated to provide to everyone (which will never happen because the banking industry would lose a ton of control) or banks must be mandated to provide non-lending services to anyone and provide lending on an identity-blind basis (ie, only metrics may be used, none which identify the type of banking or business or employment or spending you do.)
The same thing has happened to conservatives. [1] [2] [3]
It's more of an establishment/anti-establishment phenomenon than a left/right phenomenon.
[1] https://nypost.com/2019/05/25/jpmorgan-chase-accused-of-purg...
[2] https://www.newsweek.com/pnc-bank-trump-mxm-news-account-178...
[3] https://www.cbsnews.com/news/gofundme-freedom-convoy-under-i...
If today, you lose access to your bank account for whatever reason, you still have various options how to purchase necessities: If you got some spare cash, you could use that; otherwise you could ask a friend to lend you some cash.
In a cashless society, that won't work: Even if the friend wants to help you, they have nothing to wire the cash to. They'd literally have to buy the individual goods for you.
The only way to fix this would be to get a new temporary bank account until the old one is accessible again. But if you got banned for whatever reason, chances are the bank will ban the new account as well.