pleroma.user unsubscribe mix task behaves oddly

I suspect the intention of the mix pleroma.user unsubscribe <user> task is to unsubscribe local users from the specified user. I just tried to see what happens if I unsubscribe a remote user that I disabled/blocked on my instance and it appeared to be trying to unsubscribe every user on my instance -- remote accounts included.

How exactly is this supposed to work? It seems to be missing some constraints.