This is not only the case in sports but in every aspect of life in 2018. The my way and my way only attitude is ingrained into society. From politics to pee wee sports there is no exception, no middle ground or working for a compromise that will benefit all. This is what happens when you teach a generation that their wants, needs, preferences and feelings are most important no matter what the cost. I can name sports program after program where some parents prefer losing just as long as little Johnny or Susie gets their playing time and all the sideline coaches have it their way.
As far as grown men acting like children, a permanent ban from the sideline and stadium all the way to the high school level should be the punishment. It would go a long way in stopping this idiocy.