PJAP I was just thinking this yesterday! I know I've already been through a few "phases" of trying different carb levels and exercise levels and whatnot, but have held firmly that grains and sugar DO NOT get along with my system anymore, and that I love the Primal emphasis on constant low level activity.
It seems like many people posting are in about the same time frame, 6 months to 1 year-ish of a Primal lifestyle, so I was thinking it's just other people's way of assessing their progress. Or lack of progress in some cases. Either way, I think debating low-carb vs. zero carb is valid here, while completely questioning the whole philosophy is unnecessary. I'm glad someone else noticed that too!