Firstly, it does not appear that there is a meta or community community for the instance, so this looked to be the best place to post this.
It appears that only the admins from the instance are federating outwardly to other instances.
I was browsing some of the communities here with my main lemmy account and started to notice that none of the posts were actually from mtgzone members. I did see posts from Mike and Andrew (I forget the format to tag), but everything else visible was posts from users from other instances. I checked to see if it was just that instance, and tried one of my underused accounts from a larger instance and still nothing.
I’m not sure if I understand what “federating outwardly” means. You mean if I view “all” I’ll still only see @mtgzone communities?
I can see lemmy.blahaj.zone and lemmy.world at least.
I mean if I view mtgzone communities from another instance posts and comments made by members of mtgzone do not seem to be federating.
I am still investigating this, but I was checking out in an incognito window and I was able to view comments here: https://lemmy.world/c/mtg@mtgzone.com
From that page, I went to a post https://lemmy.world/post/14092789?scrollToComments=true and see some comments coming through, but I have to look into this more.