Critical Mass is obviously a sign of massive inefficiency. It takes dozens, if not hundreds of riders, to block an intersection. Darn it, yo can do the same thing with just two cars.
Obviously, critical mass needs to be banned, hounded like the Communist party in 1950's, its members set on fire, and any person who has ever seen a critical mass must have their eyes poked out.
In all seriousness, I may not approce of much of what goes on with CM, but I find the reaction to them is blown way out of proportion. I'd also venture to say that for every driver that gets encounters CM, there will be a 100 or so who complain about CM.