I don’t think this is necessarily a defederation issue. I’m running a private instance and should not really have been defederated as nothing comes from my instance except 2 users (of which I’m the more vocal of the 2 of us). I run into the problem you outline all the same. My version will show 2 comments, the origin server will show 11. Sometimes even completely different comments and none of the instances show to be blocking me on their /instance page.
I’m not on either feddit.de, lemm.ee, or lemmy.world’s lists. I still run into this.
What I think is going on is simply hiccups in federation. Instances where one of the instances misses sending an ActivityPub message to all parties and that’s it.
But let’s even say that I am currently defederated. From my understanding this is a temporary measure until stuff settles down a bit.
So if all this work was done to determine that the phone layout is simply better than the calculator layout… why the fuck are we still using the calculator layout on anything?
And screw you OP for bringing this up. Now I want to remap my 10-key to phone layout to see if that’s “better”… I already had important stuff to do this weekend that I’m totally going to ignore now because this irrationally bothers me that I didn’t realize this before.