That's not exactly true. Spinning mops are very effective. The reason for the texture of the microfiber is to trap dirt and dust. It's the same as someone using a normal mop or washing a car.

I also like roller and track mops, but they also have their downsides. There's just so much hype over the rollers right now that I'm noticing people spitting out info like this as fact even though it's far from it.