Looks like it's down? Federating may be putting a strain on their server that they weren't entirely prepared for?
So far from the little I've seen from hexbear comments in my feed is they like to shitpost with emojis/pictures whenever they can ... which so far seems quite fun.
@maegul if you look at their All feed you can see a few subs from lemmy.ml. Not sure how far their federation is spreading yet but it sounds like it just got turned on