Do they mean that if I am not subscribed to any instance, I cannot comment there? Or if I don’t have an account for that community, I can’t comment? For example, I made my account in lemmy.ml but I am able to comment in one of the instances of beehaw.org.
Update: I couldn’t comment on another instance in Liftoff since it asked me to sign-in to that instance but I don’t have that instance’s account. I can comment via Jerboa though.