Broken record: this is a brilliant product. It promises a marginal improvement in a volatile stat measured meaningfully only when the grown child applies for college. It's purchased exclusively by parents that were already going to fold space like a Guild Navigator to get their kids into selective universities. Heads: you take the credit for them getting in somewhere they were getting in anyways. Tails: there is no tails.

It's like a financial derivative product where the underlying is upper-class parental status anxiety. There should be a ticker symbol for it.

"He tasks me. He tasks me and I shall have him! I'll chase him 'round the moons of Nibia and 'round the Antares Maelstrom and 'round perdition's flames before I give him up!"

There are thoroughly developed arguments that highlight its conceivable benefits when applied in way that someone judges ethical, and thoroughly developed arguments that highlight its conceivable threats and horrors when applied in a way that someone judges unethical.

The application of eugenicist principles to justify ethnic genocide during WWII, and the public surfacing of eugenicist policies put towards economic and racial oppression by the West when it was openly self-reflecting during the 60's and 70's, pretty much tabled the public debate because it provided evidence that convinced many that the threats and horrors were inescapable.

So yes, many "complainers" probably do understand exactly what you wish they understood, but they also understand the counterarguments and find them more convincing. You don't have to agree with them, but don't underestimate their breadth of their understanding just because they don't agree with you.