Pretty sure it's mostly one user creating all those communities, too. Odd behavior.

If you are using android, connect for lemmy can block instances. It is much more peaceful. It even blocks the comments from the users. Although you can have them show as you come across them if you so choose.

There apps that can filter entire instances

This is horrible imo. I personally turned off NSFW since I don't really care about missing out on gore or the likes.

That is already possible, at least on the 2 apps I've used. Don't know about the browser version, but most apps have this option.

FYI: I use this usercript to block whole instances: https://greasyfork.org/en/scripts/469297-block-lemmy-instances You need to edit line 17

Here adapted to work also with MLMYM (https://old.lemmy.world): https://pastebin.com/z0mShfDP

The real content doesn't appear in its feed when you're not logged in (due to being NSFW), so it misleadingly seems like the celebrity stuff is the only content there. You need to visit specific communities such as !gonewild@lemmynsfw.com.