I’ve seen multiple requests for nsfw lemmy communities like reddit has. I live in Germany, and I think you are required to verify that the users that see porn content are above the age of 18. Does Lemmy has or plan to have a feature for that? Maybe this should be an issue on github?
That is only relevant for instances hosted in Germany, and also why feddit.de and discuss.tchncs.de (like most instances, though) defederated from NSFW instances.
Age gates are a joke and almost no one uses them, xhamster even flouts the law and changes the German subdomain whenever there is a new idiotic ISP DNS block.
Related anecdote: I was hosting an erotica forum (which I started doing when I was 14 or 15 …) when the law came to be, we had to get a Jugendschutzbeauftragter (youth protection officer; luckily something that existed “as a service” for like 5€/month) and implement an age gate. This killed the site.