I have several friends who are "creators" who answer their own messages. I had an ex who warned me that she wouldn't mind if I watched porn but she wouldn't want me to use onlyfans because the platform encourages 1:1 communication.
I wouldn't expect, like, Mia Khalifa (I'm out of the game, who's current?) to answer her own messages but there does seem to be an expectation that smaller creators are actually behind the accounts.
The fact they answer themselves or with help from someone is one thing. The fact they are sincere in their messages in another one.
I know there are also some people who pretend they are falling in love with the prostitutes they pay to have sex but the terms are clear both in physical and online prostitution. It is all a business about pretending and consumers should expect that.
Even if it is 1:1 communication, it's not like the two of you were likely to meet. The thing that I've always seen as the one to get upset about is if the person is local thirst trap type of someone that is much less famous and more of a possibility of real life interactions.
I wouldn't expect, like, Mia Khalifa (I'm out of the game, who's current?) to answer her own messages but there does seem to be an expectation that smaller creators are actually behind the accounts.