I'll preface this by saying that it's totally fine if everyone wants to continue the discussion around this topic, since it's obviously one that there is a lot of passion behind.
But while floating the idea that a porn company (or virtually any online company) could/should/would shift away from major credit cards and move to crypto-only payments is a fun thought experiment, and maybe in another decade the outlook might look different - right now it would be an immediate death sentence, and I hope everyone understands that. To say that the loss of income/revenue would be "profound" would be an understatement, and no amount of guides/manuals/walkthroughs to help new users understand and set up crypto payments would ever come even remotely close to recuperating that loss.
So if we're weighing the pros and cons of a site shifting to crypto-only payments, with the "pros" being a porn site can now have the freedom to include things like fake alcohol/drugs/non-consensual content in their scenes and the "cons" being that porn site immediately loses 99% of income, hopefully the obvious choice is pretty clear.