Exact same scenario here - kids basically get punished in 2018's HS program for being good enough to go to JO's in Arizona in June, or then Florida, Texas, etc. later in the summer. Doesn't the high school team become better ballplayers by facing the highest level of competition throwing 85+ for a week, as opposed to staying home and facing the same guys you face in spring & fall?
Multiple kids passing up going to Arizona for fear of upsetting the HS coach. 2018 taking the opposite approach - HS is like Little League, his travel is the "real thing" and that is what he needs to focus on if he expects an opportunity to play at the next level. Not the best situation, but clearly many players will be faced with the same decision this summer.