This is spot on, high school soccer is for fun. Some coaches take it far too seriously.They know and they are fine skipping it. Basically if everything is based on that tournament alone, then well ....
I've seen 3-5 kids skip MLS and play HS in my kids school alone every year he has been there (snr now). He can recount instances in multiple other schools. IMV, club coaches & clubs generally hate HS as it takes their gravy train away, but they deal with it outside of MLS, while they constantly tell their top players (non MLS) not to do it (from my experience). The kids love it, on the other hand. Its fun, its with your buddies, you bond, hang out and play soccer ... winning isn't even that important - although they are boys so always play to win. There's the added advantage that the kids need to have a certain GPA to play and if not they are auto dropped, that's great too.
HS ball, standards are iffy, fields can be iffy, refs can be iffy ... kids have loads of fun. What's not to like!
For the non-Academy MLS teams of high school age, a lot of the players on the teams are there more so out of attrition. The very best who are still passionate about soccer have moved on to Academy teams, and the best players who weren't as passionate have moved on to other HS sports, while often still playing high school soccer. So what's left on most non-Academy teams are solid, but not the very best soccer players, yet club coaches are still selling the dream.
There are still parents hoping their kid gets a soccer scholarship. Those kids' odds would be much better if they switched to football in high school, 85 football scholarships vs 10 scholarships for soccer (although there are a few more soccer teams). Soccer players make the best football players and you don't need to play football before high school. Although, the best ways to pay for college is with a 529 plan and/or academic scholarships.