I'm not saying everyone should ride flats.
I was saying that some of the supposed advantages of clipless pedals are bogus (in my experience). I think many mtb riders who ride clipless do it simply because they are expected to. And another many do it because they are afraid of being bounced off the pedals (and looking like a dork).
I've had to ask twice in this thread how a flat pedal inhibits a good spin. This simple question has stumped the two people who put it forth. I think that's a good example of the clipless myth.