I don't know why this/these rules are in place, but I can say that back in the day, I would talk to coaches about the rules and ask about their AD's perception of the restrictions. A surprising number of coaches would not have any problem with the restrictions. They also griped about their regional assignments and usually failed to field a competitive team. In other words, they liked the tiny paycheck and title IMO.
Others would say that ADs didn't go strong for a change because other sports either had more restrictions or thought it might cut back on participation in other sports. I don't buy it, but that was what I heard. I do believe KSHSAA would vote for a change in the rule if a vast majority of ADs came to them with the request/support for such changes. I know KSHSAA gets a lot of grief, but I would encourage you to discuss all of these issues with your AD and ask what they are doing to initiate change. I'm guessing a wrestling based forum gets a lot of attention.
The NUMBER ONE rule change to improve KS HS wrestling is coach contact from the end of the season until Labor Day. Wrestling NEEDS the March, April, and May months when they don't have to compete with football coaches for time to work with the kids who WANT to get better.