Big Pin, you are right, some kids will even cut more weight, some won't. No matter what the weight classes are kids will always cut. But now it's much easier for kids to go down 2or 3 weight classes then if the weights would be spread out more. For example, a kid wrestling 135 drop to 125 by dropping 10 pounds. If the weight classes were more spread out a kid may have to drop 14 or 15 pounds to go down 2 weight classes.
I also think that between 125 to 145 the weights are too close together anyways and more kids are willing to drop to the lower weight because "it's only 5 pounds".