There are still a couple of performers who don't do things they don't want to do, Lana Dallas is one. Carla Brasil was close to it too for a long time. Although it's rare it's much more attractive to see someone basically live out their personal sex life on camera vs. playing a role to please an audience or worse doing something you know that they hate.
But it's true, the success of Onlyfans and monetization of amateur porn basically destroyed authenticity.