The thing is, hands off approach really works and motivates kids - but it still requires attention and correction. And it does not work with all kids at all ages.
Most people remember 15 years old self and assume kids all ages are as mature as they remember themselves. Meanwhile, most 6 years old are much less developed.
The other option is to ask in the evening "have you done homework". One of my kids would never lie and other only rarely, so it worked.
To add to it, old system was not freedom. One feature of old "parents know only what kids tell them" system was that many parents learned about issues only when inevitable end of semester report/grades came. At that point, issues grew large. Even worst, parents were surprised and shocked, tended to react badly, punish the kid , yell, beat them etc. I remember reading about flux of kids running away each time reports come.
The whole point of child raising is to raise the child. Not to go "kiddy, if you are not born organized and attentive, tough luck, we gonna do nothing and then blame you for being bad in school when you grow".
My point is that by the standards of that comment, you are micromanaging. I think those standards are ridiculous, though.
Plainly, parents of successful kids are all very involved. This sort of “you sink or swim on your own merits” nonsense is moronic bullshit.