Horror games are incomparable to NSFW games in anything that's not age rating, so NSFW games getting hidden is a convenience (and also a legal requirement).
I was treating this option as on by default, I think you can achieve the exact same thing while also making a QOL feature with Tag exclusion.
And Steam is different because it has actual QA, and horror is one of the easiest genres to make, perfect maelstrom for a bunch of horror garbage.
Maybe getting QA would help as well but what do I know? I only review and see the newest games everyday.
And Steam is different because it has actual QA
This.
Also their "browse" section works completely different and they have like 80k indie games there, and default "indie" on Steam means not a huge studio/publisher, but still professional small studio usually, while the usual on Itch is amateur single developer with no publisher.