I wonder how many of the accounts on world are ones that are just left for dead as people moved around to other instances. I myself was day one on world but the outages became too much.
Made my first Lemmy account on Lemmy.world on the first weekend of June, but the outages of late June/early July pushed me (with some encouragement from others who've already made the jump earlier) to make a lemm.ee account. It was only supposed to be an alt, to be used when Lemmy.world is unusable, but the Meta fiasco then made me decide to make lemm.ee my main.