There is a nsfw flag that can be used to filter, the problem this person is complaining about is the fact that things like “AI art” communities are constantly being created as new communities with essentially the same content every week, and it gets tiring blocking them all the time.

I like my C/all feed to have a mix of nsfw and sfw content, I don’t likexit having any AI content. I have to block several new communities every week because AI dumbasses create new communities instead of posting in the old ones.