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.