You can still interact with and view posts from lemmy.world, even if you don’t have an account there, that’s part of the whole federation functionality.

Is it that you don’t want to engage with that instance?

[–] ValiantDust@feddit.de 0 points 1 year ago* (last edited 1 year ago)

You can view them, but you can't interact with them. When I try to upvote a post or comment when lemmy.world is selected I get an error message along the lines of "This thread was retrieved via lemmy.world. You are not logged in." Forgetting and then having to search the post on your own instance to interact with it can be a bit annoying.

Edit: I just saw that they added an option to switch instances when viewing a community in the latest version. Great news!