I am really tired of putting thought into replies on threads and returning later to find they have been deleted.
Likewise, sometimes a PP gives a really helpful or inspiring reply and I want to return to re-read it, only to find the thread deleted.
When threads have been found to be started by trolls or PBPs, can’t the thread just be locked? Unless leaving the thread up could cause harm (which I understand can be the case in some situations) I don’t see why whole threads should be deleted when the advice or options may be helpful or thought provoking for others, even if the OP’s motivation was questionable.