I have a mixed feelings about this... I mean, from consumers' perspective, if content creators abuse this, it would make it a lot harder to look for good content that people actually want to watch, especially for the people who doesn't have premium accounts.
If they want to sell their content to more people, they obviously need to build some thick skin, and take feedback that actually can help improve their future scenes. But if they don't want to listen for whatever reasons, give them option to disable their comment sections (similar to YouTube). I think this is a much better approach. However, it won't feel like a community anymore... Plus, expecting to see improvements would be meaningless. 😔
On the flip side, deleting comments can be a good thing. Toxicity won't help anyone. Of course, I'm talking about those comments that doesn't really help the community and not the constructive criticisms; comments like, "She shouldn't be a pornstar, so fucking ugly..." or "Your content sucks! Why are you even here? Shutdown this studio!". Stuff like these can lead to tragic and sad moments; suicide (yes, you read that right), studios leaving SLR, etc.
People enter the adult industry for all sorts of different reasons. And sometimes, it's not all about money (over the years, I watched / read lots of interviews, retirements, and tweets from sex workers, so I'm not just saying random things). Perhaps, she just want to feel sexy, or feel good about her sexuality and appearance; negative comments combined with low self-esteem are also some of the reasons why "enhancements" or makeups plays a role in porn (in my opinion, and based on what I had seen and read).
But, if this is how things are going to be, I feel like there should be an additional voting system in order to delete negative comments, rather than deleting those comments without warnings or something. And the community should be able to vote and participate with the deletion process; the option for deleting comments should only be available to heavily down voted comments, so it won't be abuse. 🤔
And before I end this, let's look at it from a slightly different scenario. Imagine people found out that some sellers on Amazon (or whatever websites you frequently visit) deletes reviews / low ratings they don't want to see. How would people feel? Are you still going to buy from that seller? Isn't that manipulative? Personally, I think it would make things a lot worse for them, and it will most likely hurt their sales even more.