I would be cautious about viewing any Lemmy.world communities right now, and the Beehaw admins should make sure their credentials are locked down in case they get targeted next.
Just because Beehaw is defederated from this instance, that does not mean that visiting a recently compromised server will not cause your credentials to be compromised.
Read the post again. It was specifically mentioning viewing lemmy.world communities, which is not possible through beehaw.org due to defederation. All you would see is the content before defederation.
People have multiple accounts - maybe even specifically to view .world, or on .world, and this PSA is what made them think twice before switching to it. I mean, you’re here reading and commenting on this post, and you’re not a beehaw.org user. But you could also have a beehaw account if you wanted. If you did, maybe you’d have been on it browsing local when you saw this.
Not sure why this post is a problem. It’s a good PSA.