

Thanks for linking to this, it could indeed be a solution.
The RFC: https://github.com/Neshura87/rfcs/blob/main/0004-post-tags.md
TL;DR: a tag/flag system for posts is described in this RFC and being actively developed with a part 1 already merged and a part 2 in review. Tagging would only be possible for privileged users such as mods and admins so they can keep a sensical classification. So from there, we would need softcore communities’ mods to agree to use a specific tag that we could filter out. That’s still a lot of if, but it’s a good step, with many other use cases.
There is already nsfw flag to avoid this kind of thing, so it’s not a new concept on Lemmy. Except this content is usually not considered nsfw enough.