Well he must be a pretty bad player tbh
i've been a leg spinner for all my cricketing life, and still dont even know what a flipper is. i was told by one of somerset's spin coaches a few years ago to bowl 6 leg spinners in an over. however i can and do bowl googlies and topspinners (by accident when the googly doesnt come out properly). i think the best variation a leggie can use is a quicker ball, because 99% of the time when you bowl one, it wont go for runs, and if it doesnt pick up a wicket it still makes the batsman think a lot more.
True story
Well I cam on 5th over and it was this guys 1st and 2nd ball