It's not just roguelites. Almost every imaginable genre is now saturated. You open Steam and you're inundated with some combination of the following tags; indie, roguelite, 2d platformer, metroidvania, pixel art, survival, deck builder, city builder and so on. These days farming/life sims and SRPGs seem to be on the uptick as well. I'm not saying this is a bad thing. It's actually great, the more the merrier and each of those games will end up being someone's first or favorite new game in that genre, and that's wonderful. It's just that nobody can realistically keep up with even genres they enjoy because of time and money constraints. Very few of these games will find success and they'll always be competing with and compared against heavy hitters in their genre like Dead Cells or Hollow Knight or something like that.
The other day lashman linked to a pixel art RPG on Steam. I clicked through to the store page and it looked really nice, but then I thought about it for a moment and realized that there's virtually zero chance I'm going to play it. First, because I already own similar games that I actually want to play but am not able to get around to so why get another one? And second, because with the recent regional pricing changes, it's probably going to cost more than I'd be willing to pay anyway. So I didn't even bother to wishlist the game and today I've already forgotten the name of the game