good kissing is natural, effortless and not "technique" .. good kissing doesn't need correcting.
when dealing with a bad kisser, someone's whose natural style is sorta like shoving a wiggle worm down your throat... their smooching instinct is just not gonna match anyone. ya sorta got to teach them a technique.
is like community service.
plus.. if you were a rubbish kisser wouldn't you wanna know?