I find it a valuable term when teaching. As long as the player understands the almost inverse relationship between extension and hand and arm rotation, or "wiper effect". Can't tell ya how many times in the last few years, I've told Jr's to tone down the wipe on the ball to get the ball to go through the air. Or to increase the effect to break off angles. It's really not that hard for many, when they inderstand "what causes what". The term is not taboo.