Anytime the clutch disengages then re-engages there always gonna be wear, there will be more wear if your like my sister and try to rev it to 6 grand and slowly release the clutch everytime..poor staurn..LOL
But rookie, your friend doesn't know what hes talking about, think about it, if your disengaging the pressure plate/disc everytime you push the clutch in it only can leave wear for the throw out bearing, thus putting it in nuetral and letting go of the pedal will leave nothing to be engaged/disengaged = no wear.