The current state is that they are separate communities, but I believe the person you’re replying to is proposing something like the other option, where some communities would be the same across instances so that the community and its post history would survive if one of the instances went down (not currently the case).
Currently, if you deleted the tiki community on lemmy.ml, only the lemmy.ml tiki community posts/comments would be gone. Any other tiki communities on other instances would remain.
The current state is that they are separate communities, but I believe the person you’re replying to is proposing something like the other option, where some communities would be the same across instances so that the community and its post history would survive if one of the instances went down (not currently the case).
Currently, if you deleted the tiki community on lemmy.ml, only the lemmy.ml tiki community posts/comments would be gone. Any other tiki communities on other instances would remain.