What KHSAA has basically done is they have taken every competitive part of June away from football. When football lost competitive 7 on 7 in June a few years ago, teams could still have their own practices and 7 on 7s within their team. They could install their passing game and have competitive drills.
Now since you can't have helmets, no football coach in their right mind will do any of those competitive type of things. So now they are stuck with doing everything "on air"; meaning they'll do it without a full-speed defense.