No, you make an alt-account on a non-world instance and interact with world communities from there. The only issue is that you aren't carrying over your subscriptions and blocks unless you use a special tool, about which I don't know much.

[–] tourist@lemmy.world 4 points 2 years ago

I tried figuring out how to use the Lemmy API to subscribe to all my subscriptions from my kbin account a week or two ago

I remember getting stuck and giving up, so I think I'm going to do it semi-manually or something later on, unless some kind wizard blesses me with the name of such a tool