Sorry guys, been AFK for a while. Building another PC. Anyway it is true that you shouldn't wax your car too often, in the same way that you shouldn't wash your car too often. What i mean is that anytime that you drag a cloth, sponge or whatever across your paint, your risking scratches to your paint.
Generally speaking I follow a regimen of wash when it needs it, wax every two to three months, and a twice a year full detail with a good paint clenser, followed by a good glaxe then wax.