I would like please to Shift to the universe where I can just have the username @mcc@dryad.technology on every ActivityPub sub-application and I am able to log into mastodon.social or lemmy.blahaj.zone with that same username and just Use the service there and not think about whether I picked the right "instance" or whether my preferred username will be taken on the correct "instance" by the time I figure out what that is