I don't know, I bet plenty of people are feeling lonely when they go out for some entertainment and that entertainment makes them feel less lonely. I don't see why that's such a bad thing.

I recently supported the new Patreon page created by a podcast host who I have been listening to for over 10 years. He sent all his supporters a short personalized video, and watching that video gave me the feeling of an authentic personal connection. Of course there's no deception going on here, I do believe that he genuinely appreciates my (very small financial) support, but there's no expectation that we're now "actually friends" in the traditional sense (he has hundreds of supporters). But still, it's a nice feeling of personal connection, and it doesn't feel like an indictment of major social problems plaguing society (other than perhaps the obvious lockdown-associated reduction in human contact).

Of course, in my example there's nothing remotely flirtatious or sexual going on, which as I understand it is common on OnlyFans. Maybe that detail makes it completely unlike my example, but it really doesn't feel that different to me.