Some varsity coaches have to be at the JV games because their assistant may not be part of the district and they are the "school representative". They may wish to see their JV team play, scout potential players to move up, or learn what the opponents may have coming in the future.
What happens if the JV coach gets sick? Who runs the team if they are away with the varsity boys? The boys JV coach who knows nothing about the girls? That's not exactly giving the young girls much priority.
What about girls with parents that can't get off of work and over to see their senior daughter play her last year? 5:30 is difficult to make if you have a distance to travel, much less in 5:00 traffic.
In the past five years I've known of two sets of brother/sister pairs compared to nine sets of sister/sister. What happens to the parents if they have to decide to see the youngest daughter play or the oldest? Don't even get me started on what could happen on the back of a bus with mixed company! We don't want any junior soccer players running around in nine months, either! Or would you rather the district pay for four busses instead of two in order to seperate them?
The majority of the state is doing this now because it makes sense. Coaches get to run their programs in the same location on the same night. Sickness of coaches can be acounted for and solved. Girls and guys are seperated for safety and liability's sake. The ADs and Coaches put the players and the program ahead of a grumpy parent or two. For this, they should be applauded. It's not always about you.