I like the concept here, but it doesn’t address the big gotcha that I found out when I setup my own lemmy instance is that you can’t federate to all the different instances that support activitypub. I can’t use my lemmy account to post on mastadon or loops.video or pixelfed, or etc. you still need separate accounts on each instance. Maybe someday they will all talk to each other but at the moment it is certainly mildly annoying.