The trinity, party responsibility, and how to try and improve the game from within

[Kaurie]

From the link you posted:

"Norm (n.) - an authoritative standard."

So yes, maybe it was not a wise choice to use 'norm' to refer to Healer DPS.

Indeed, 1 out of the many (3 simple, 1, 2, 3a,3b,3c detailed) definitions included the word 'authoritative' to suggest that a norm can, but is not required, to have an authoritative backing.