I don’t think it’s particularly hardcore myself, I’ve just been moving away from platforms as they’ve been enshittifying. I was on reddit over ten years but left over the API thing and haven’t been back. I stopped using Facebook a few years ago and haven’t missed it at all. I stopped using twitter when musk bought it, tried using mastodon for a bit but it was kinda barren so I’m on bluesky now. I still check in on mastodon occasionally. I’ll move on from these platforms too if they turn to shit. It’s easy to get caught in a kinda sunk cost thing with platforms, but really it doesn’t matter how long you’ve been there, how many Facebook friends you have, how much karma, whatever - if it turns to shit it’s time to move on, and best go early to avoid the rush!
Yeah Lemmy has porn but if you want anything at all niche Reddit was better. My tastes are pretty vanilla so it’s not been a problem.