At some point, does HS football cross into a space where it's "just different"? In some sports....and no offense intended here, you can roll the balls or mat out and it will at least look like that sport. The numbers are smaller, the sport is more intuitive, the demand for organization, schematic knowledge, solid assistant coaches, the difference in position specific skills, etc, etc is all lesser than football.
Example: A school has their head basketball job open, and they can't find someone that fits any teaching opening they have. They can hire a lay coach, maybe a parent that has a kid that is in the MS and wants the program to be good when their child comes through so they apply and take the job. They aren't a coach, they played the sport in HS and that's about as deep as their schematic knowledge goes. They will roll the balls out and it will at least LOOK like basketball. That's not ideal, but its not the end of the world. The kids will go and compete, and as long as you can find 5 kids with a talent level close enough to most of your competition, you stand a chance to be somewhat competitive.
Same scenario in Football, and you're talking about 1-2 wins, getting beat by 35+ in most of your losses, kids getting put in a position where they could possibly have an increased chance of injury, etc.
Football, without someone that really KNOWS what they're doing schematically, and has had the experience of being on a Varsity level staff before, seen that kind of organization and attention to detail, is set up for failure....no matter how talented or committed the kids of that school system may be.
If we can agree that football is "different", how many school districts treat the hiring of that position differently than another Varsity coaching opening? Where they would possibly "create" a position for the right candidate, put together a pay package that is more than just a few thousand dollars greater than another sport that only works with kids 3 months out of the year (Varsity Football HC is now a year round gig), tailor the candidates schedule to allow them to do all "the things" that have to happen in order for a football program to be successful, etc?
We know that some schools do treat football "differently" but why do so many act like its the same as any other sport?