Sure way to get past any politics? Be a great player with a good attitude and good grades. Best way to steer your kid toward a bad attitude as a parent? Do things like walk out of an end-of-season gathering laughing at and mocking the coach. Or complain about a promotion to a higher level with less PT.
Look, there are countless reasons that a coach would move a player up a level and play him less and it still is a big plus for the kid. You spend more time practicing during the week than playing in games. If you practice with better players, you get better faster. If you practice with the better/older players, you mesh with them and are more likely to be matched up with them as they move up the ladder. Often, you get more coaches at the higher levels with more detailed and advanced practices. When you do play, it is against better competition. You may be filling a role that is a need for that team that is very important, albeit not full time play. And on and on...
If your son truly has aspirations to be scouted by pros, the last thing he wants to do is stay at a lower HS level so he can get more PT against weak competition. This is an awesome opportunity for him to start learning to deal with things like being a one-way player or role player because that will almost definitely be the case as he moves up.
It's all in one's perspective and attitude. Let your son learn by example, Dad.
PS - Jaggerz, it just wouldn't be the same without you joining each and every coach-bashing discussion, regardless of whether there is a valid argument or not. I would think that, with your son's experience, you would know that voicing the bashing message helps no one.