Especially since the post in question (that got noted, not warned) wasn’t even the OP’s to begin with.
It’s not obvious to me because, as others have said in this thread, the poster may not have noticed what forum they were in. I don’t browse by forum; I check unread posts, then new posts; then sometimes latest posts. Most of the time I have no idea what forum I’m reading. I try to remember to check forum before posting anything – and before reporting anything – but once in a while I forget.