I'll throw another factor in there - parents. Today's
helicopter parents think they're "standing up for" their children when they're really teaching them to be entitled and dependent on other people for their happiness. Anyone that stands between the child and whatever the child wants is loudly condemned.
About 10 years ago I worked part time in a middle school as an "office lady", keeping student attendance and sending out failure letters, etc. Parents, mostly moms, would call in and say their child was tired and needed a mental health day. After too many mental health days, I would inevitably have to send a letter to the parents saying their child was failing his classes. I would then get an irate phone call, demanding the teachers assign extra credit projects so the kid could catch up. Heaven forbid the child speak to the teacher and handle his own problems.
Another anecdotal story - my youngest was in the high school marching band. When the band members would get unruly, not pay attention, etc, the drum major would lead the entire band in laps, doing so until he or she got the desired behavior. The kids in the band never minded - they didn't know it but they were building a close, tight-knit team, the way a military unit might. However, in my son's senior year, a mother became outraged at seeing her son run laps but she didn't go to the drum major, the teacher, or the on-field instructors, oh no, she complained to the Board of Education that her son was being hazed. The drum major got written up for hazing and the laps were forbidden by the Board of Ed.
So, I expect these kids will go on to college and some professor or coach has to integrate the kid into their system. But the kid has grown up thinking that "it's all about them" and refuses to accept any form of correction or punishment. The kid isn't a bad person; he or she was just taught to think that way and it was reinforced over and over by the parents.
I'm not saying that that's what's happening at the schools where the complaints were filed because I have no inside knowledge whatsoever. But if a kid does feel that entitlement, it could mess with the team chemistry or make the coach's job more difficult. Just throwing it out there as another factor.
This is one of my hot buttons. I'm not a perfect parent, by any means, but I did try very hard not to hover. To see the young people that are incapable of speaking up for themselves, or who see correction as punishment instead of guidance, or who automatically reject anything that doesn't benefit them, it just breaks my heart. Those poor kids are destined to be unhappy in the long run.