I've suggested an actionable solution that doesn't really inconvenience anyone, unless you think a profile setting is a huge barrier to anyone seeking content, and the NSFW profile setting is unfair to NSFW devs...? People have been begging for solutions to this horror game problem for years.
All the horror is objectionable. Not because the mere sight of it frightens, but because the tiles are ugly. It's not much different than not wanting to scroll over NSFW games. It's hardly unfair, considering it won't slow any fans down. NSFW games do fine.
I've never had such a problem with horror games on Steam, no matter how or where I browse it.