On my instance nobody younger than the admin is allowed.

On which instance? Australia has that as a law, from my understanding, and given your instance's ccTLD, I would assume the law applies to that instance.

That actually varies by instance, it's been an issue because the lead mod of several tiny communities is under 18 and had to move their communities to an instance they're actually allowed to be on.

Lemmy has porn

I guess the opensuze lizard is naked