There's one aspect to it we haven't considered. Kids don't train themselves. Coaches train kids. It's up to coaches to know what's required of skaters, and if there are still any coaches saying, "Just land the jumps and smile," those coaches should pass the more promising skaters on to another coach.
Michelle was a gem, but she was also in the hands of a master jeweler, Frank Carroll. He made sure she had meticulous jumping and skating technique. (I heard somewhere at the beginning of CoP that footage of Michelle's edging was given to technical coaches as an exemplar. I don't think I made this up.) He took care to keep her footwork and other ankles-down technique at the highest level. And of course he obtained the services of Lori Nichol, who elevated Kwan's routines beyond the realm of the ordinary. Kwan was their greatest muse. They in return (to mix a metaphor) were her Merlins. The three of them certainly deserved one another. Lucky for all of us!
Sasha had an amazing amount of promise. She didn't always hold up under stress, but she did miles better than most other "head-case" skaters: multiple world silver medals, Olympic silver, top-five finish at least all through her senior career. She had John Nicks in her formative years, and as a result she not only skated jumps well enough to land them most of the time, but she had s gorgeous layback position and pointed toes. Dick Button and Peggy Fleming praised her when she was fourteen, and they weren't wrong.
Caroline Zhang was also a gem. Who let her get away with that gosh-awful jump technique? Can you believe that this girl at the age of fourteen would have told a coach, "This is how I skate, and you have to live with it"? I doubt that. A coach should have been telling her what to do. So how did she end up falling down off the precipice after such a promising start? Puberty doesn't begin to explain it. I'm not entirely sure CoP explains it either, because Miki, Mao, and YuNa seem to be doing just fine even with CoP. (And Miki has been around since the days of 6.0.)
We have to look at the skaters coming up, but I think at this point, we may also have to look at the coaching. Thank goodness Mirai is now with Frank, and Alissa seems to have made a promising move. For the rest, I hope the U.S. program cottons to whatever we're not doing enough of and can change as needed.