Affluent kids actually get mental health care rather than slipping into drug abuse, problem behavior, crime as teenagers.
If we define helicoptering as enabling your child’s talents and interests, whether cello, swimming, art, dance, or baking, then your second paragraph issues go away. if you are forcing your agenda on your child, even if they are compliant and getting a 700 on an SAT, there is a basic breach of trust and your being there for your child (not some superstar wannabe like child 1 or neighbor’s kid at Harvard med). That could be really erosive and probably damaging to more kids than just the ones who fall apart in visible ways.
I also am a bit confused. If your child cannot compete in a timed sport in your high school, then swimming should not be their “hook” (recruitment or even interest would consist of beating a county time). If your child is not taking APs and not getting As because it is too hard, they are not going to do well at that flagship (or even higher school). You do realize that the competition in say Rutgers biology classes is going to be lots of kids with 14 APs, including a 5 in AP bio and AP chem and AP calc. If you are drifting to the bottom 25% of the class, this may really put your kid in a bad place, whereas at Montclair State they could be A students. learn all the at bio, and maybe transfer. The 50% stats for Rutgers and TCNJ are pretty low on the low side, meaning that ACT scores are not always predicting success in say biology or other limited enrollment programs.
Even SAT prep requires learning basic math and vocabulary, AP classes start teaching college level concepts and work habits that will really help your child in college. Those cello lessons lead to mastery, whether in chair 1 or 19.
The limited enrollment programs should allow transfers in for kids who overachieve in college and move to the upper 25% of the class, otherwise that is punative.
I think you have to put this in real terms for your child. If they are not willing to work harder at something, they will be at Montclair state or a similar private school or they and you will have to work and take on debt to get into a less selective school with high EFC (the free or very reduced price schools are often that for a reason, if you are getting a top scholarship, you will be bored freshman year, but there are worse things to happen). Then to catch up, they will really have to hit some home runs in that school and move back into the flagship competitive category.
Or maybe you are helicoptering and your child is on the right track, going to a second or third tier school, working at the pace they are willing to work, and achieving what they need or want to achieve (and they may be perfectly happy in your basement until they are 30). I don’t know if that is a terrible outcome, if your basement is pretty nice and you keep a good relationship with your kids. By 30, they have a decent income., marry, have kids, and repeat. Maybe the grandchildren will want to take a dozen APs and go to HYPS.
And based on meeting a lot of people over a lifetime, every child has something they can make special, and only 10% are in the obvious teams or activities in HS. Go out in the community and world and find something for them to do, write a good common app essay …
Regarding NJ schools, if your child is in a competitive HS in NJ, they are getting a good free public education, which is a fantastic deal. If they go to one of the top 5 colleges in NJ, they can build a career with that degree. NJ taxpayers defunded both their K-12 schools and Rutgers in the 1980s … if you need better, you will need to elect people who will build Rutgers to status of say UMd and fund some more options like TCNJ or Rowan or make Montclair State a top 150 school.
Not being happy at getting a large hardworking Asian and other immigrant population moving into your state also seems shortsighted, hardworking people who value education are a fantastic economic engine that say ND will envy.