not really.
but I imagine it might help people get familiar with less obvious sides of their sexuality. things they would flat out refuse in real life because they thought or were taught to think they're 'not that guy/girl'. maybe they're straight, but find out they kinda like watching chicks with dicks. or maybe they find out they'd like to get humiliated, something they were always taught was abusive and bad. in the porn world there's always tons of people who share your weird kink, and most of them are pretty normal decent people. maybe suddenly you don't feel like a freak anymore. -of course there are always some people kink shaming you as well, but those are a small majority. most people are fine with your kinks, even if they don't share them. so you end up liking yourself more and enjoying freely whatever consenting adults want to do in their own home. I can't see much downside to that.
getting better sex is kinda different thing though, and I think it comes more out of aging and experience. when you're young you don't really know or understand shit. you just go straight to the penetration, and maybe think a lot of positions or uncomfortable places mean 'good sex'. but with age you come to appreciate everything around it, the anticipation, nuances, the subtle touch. and so you actually start getting better at it. people who are great at sex are also great doing missionary with their wife. it's not about memorizing kama sutra or checking boxes.
you also begin to pay less attention to superficial things you thought you wanted when you were young. because even though you maybe love big tits, you meet people who don't have them and find out they're amazing in bed. while the girl with big tits maybe wasn't. and so you lose one by one those preconceived ideas you thought you REQUIRED when you were young. like maybe you thought you liked slim model girls, because it just makes sense. right? but then you one meet a really fat girl, who somehow manages to be incredibly cute. and it's not that you suddenly got a chubby chaser kink, but you find out it wasn't the dealbreaker you always thought it was.
based on my own experience, it's unlikely you get more restrictive with your choices as you gain experience. instead you get more open, more receptive for good experiences.