and why does MN have only one protected species?
I wonder that too.
They've even got their own board: "The Staffroom".
There's plenty of other professions represented on MN; for example, nurses (disclaimer: I'm not a nurse), who get criticised or challenged... sorry, of course I mean "bashed".
I've asked MN why there isn't an equivalent board for them ("The Sluice"?) and received no reply.