Honestly, majority of them I absolutely hate, they're rarely good and it feels like I'm looking at the same game over and over. Writing is often about as uncanny as their visuals, which is a little odd for something that claims to be a "visual novel". But to give credit where it's due - there are a few rare exceptions that I'd say are actually good. It is what it is - they're easy to make so people will likely continue to make them. Although asking for money on patreon / subscribestar for what is essentially asset gallery feels a little off-putting. Then again, that's most of the NSFW games out there, but at least some make effort to put a functioning gameplay around it rather than just a slideshow of someone else's work.
Anyway - don't like it, ignore it, and let people enjoy things even if you don't. Then come to threads like these to complain about it.