This is a very excellent point, especially when the points listed are taken as a pattern, rather than individual incidents. If one person has a few online accounts because they're not "out" that is a very different thing say, than one person habitually creating profiles at one website over an extended period of time and using them to misrepresent themselves. A P/person who loses their temper over a bad day (or PMS, as mentionedI stand behind it, this list is even useful to the nillas alot fo this can be applied to any relationship regaurdless if they are kinky or not, I know this would have come in handy to have back long ago in a galaxy far far away when I was nillahaha) is a very different creature than someone who exhibits consistent emotional lability or consistently loses their temper over stimuli that don't line up with the response given. These are all things that can be major "red flags" in any relationship, kink or otherwise. I would even hesitate to remain in a casual vanilla friendship with someone that exhibited a pattern of some of these behaviors.
Yes, late to the thread. But, I did just join, and thought this was highly relevant to comment on.