"Taxes shouldn't be too high, and shouldn't be too low" is about the most precise statement anyone can make about the Laffer curve and still be able to have it hold up in the face of the real world.
Well, given that plenty of governments seem to think taxation can be increased indefitely in order to support their "client state" of government employees, I'd say that was a valuable result.
Pardon me if I'm not bowled over by that.