He is right as well...I believe KYB recommends using their shocks with <1.5" drop and wont warranty them otherwise. Not a big deal, I dont really know how they come up with that arbitrary # anyway, since I would imagine it differs from car to car.
Also, camber kits definitely cant be based upon the drop specified. You can *generally* say that with a 2" drop, you will have somewhere around 2deg negative camber, but that doesnt always mean you need a camber kit. Get an alignment after you install the suspension, and look at your specs. Toe should be minimal after the alignment. Drive on the tires for a while, monitor any uneven wear, and if its present, get a camber kit.
I have -2.6deg and 25k+ on my Kumhos, no camber kit and theyre still going strong. Rotate your tires frequently and in most cases, youll be fine.