I would expect most seniors to want a set of eyes across their work doing any form of authk or z. If only to share blame :p
I've always seen authn. Where'd you pick this usage up?
For my part, I have not encountered "authn", "authz", or "authk" before. But prior discussion did not even mention the word "authorization", and that seemed worth bringing out in the open.
So, not nonresponsive, just responsive to things you weren't personally interested in.