The problem in this specific space is that many people don't want their payments to a NSFW company to be associated with them. Most blockchains makes this trivi

The problem in this specific space is that many people don't want their payments to a NSFW company to be associated with them. Most blockchains makes this trivially traceable by design. The ones that don't (eg Tornado cash) end up being used for money laundering so on/off ramps won't touch them. We'll see what happens with the ZK-based chains, but this seems a systematic problem that is difficult to fix.