People should know if they talk to a bot or a human. This goes for only-fans, customer service, anything. A human pressing a "send" button does not change anything. But disclosing it would hurt the specific business, right? So it matters to something for someone. I respect AI-companion apps like replika much more than this.
They should also know if they're talking to the actual content creator, or an operator paid to pretend to be them.
Which is not the case currently, you think you're talking to your favorite porn actress but you're talking to some dude in India pretending to be her and trying to sell you "exclusive content" (i.e. prerecorded videos from a catalog).