On Lemmy you can see (and search) a list of all the activity from every instance federated to your home instance. Looking at Ibis, which a few posters have mentioned on this thread, it has a discover page with a list of federated instances and articles on those instances. The current format is hardly scalable, but it’s a start.
But, as I said before, the issue is less about discoverability and more about editing. Just like I can post in this thread even though I’m on a different instance, you can edit an article on one instance even though you’re on another. The alternative as used by Wikipedia, is to allow anyone, account or not, to edit. Requiring someone to have an account on a federated instance would mitigate a fair amount of spam and ease moderation.
I thought they were sold in the US now with some slight modifications to comply with the law? I know I’ve seen Kinder eggs in my local grocery store.
But yes, the ban is due to a perfectly sensible law having a bizarre edge case.
It’s also why king cakes don’t have the little baby figurines in them I believe.