To each their own I suppose.
This is the same approach that sports/martial art/artisans use (deliberate practice, etc). The concepts are tools, and being able to use those tools intuitively and instinctively is key to advancing to the next level.
Since we're generalizing, I think that most people that complain about complaining parents haven't taken the time to listen to what the parents are actually complaining about.
It would be interesting if teachers could provide cliff's notes of the lessons so parents can help out. Would help the kids too!
Or even better, teachers could have kids prepare explanations for the techniques. Might take a while but I bet the children will remember the techniques way better afterwards.
But I'm happy everything works out so easily for you. I could only hope that one day I'll be as smart as you seem to be.
If you hate something on political grounds, you're not going to be amenable to finding out what it actually is, for example.
In fact, I feel like I've seen a study showing that the "new math" teaching methodologies that get parents so mad nowadays end up with kids being better at math...