As I said elsewhere, the “cost” argument doesn’t hold in my opinion. If I with my lemmynsfw account subscribe to /c/tractors on a completely different instance, that entire community’s content gets pulled to this instance anyways, so whether or not the community is created here or elsewhere, if there’s at least 1 user on this instance subscribed to it, it’ll create exactly the same cost on this instance, that’s just how the fediverse works…
FYI, you might want to adapt your title, it’s violating rule 1 of the community