There is a substantial amount of spam and NSFW posts on the All page coming through already. Most NSFW posts aren’t being tagged as such and are coming right through. I am not sure how this can be weathered but we need something in place fairly soon, I feel like we are days away from rivers of bad stuff, especially via some of the federated instances.
EDIT: I personally don’t care much about the NSFW aspect, more in the lines of what a newcomer will be seeing when they get to the main page. 99% of the newcomers don’t know / care about federation and have no idea how to turn that off. Liability for the server owner is also an element of consideration.
I don’t think that you fully understand the scale of illegal stuff that is transiting on the fediverse, and by illegal I mean “FBI illegal”. You don’t want it stored on Ernest’s servers. Some instances are blocked for a very good reason, even you would agree.
BTW I already switch to defederate and I blocked NSFW, but we all have to take into consideration the risks for Ernest, because in fine he is the one hosting the pictures.