Gripe #1 - Security Triangle:  Functionality, Ease of Use, Security
I guess it's three things, and I do get their point, as I even posted here recently how Donahue said something similar, except he used these three:  cheap, usable, and secure 

My complaint:  This upchucks in the face of the security triad : CIA, that is, confidentiality, integrity, availability
Of course, I guess I'll be very likely to remember this, just because of my disagreement with their choice of words.