"Don't listen to the professionals on the front lines. They know nothing"
Really?
Really?
Professionals keep up with developments in their field, insist on scientifically valid studies to inform their methodology, and so on.
In this case we are not talking about professionals, we are talking about teachers.
They pick a theory that sounds good then ignore any evidence that it isn't valid.
https://www.educationnext.org/stubborn-myth-learning-styles-...
For this reason, when they say X is caused by Y, it may well be, but not because I put any stock in their pedagogical expertise.
The repairman's techniques are immediately assessable. If you pick up your car and it doesn't work, his technique failed.
A teacher's results are not obvious until many years after the fact.
It is for this reason that when purchasing a car, we expect manufacturers to use engineering processes informed by scientific study that lead to longer-lasting cars. When mistakes in their quality are discovered, their cars develop particular reputations and sometimes have to be recalled.
All in all, the schooling system issues are analogous to those of the industry. How often do I read about devs complaining that management is stupid and academics are in ivory towers and know nothing of the front lines? Certainly, many teachers are quirky, but people dismissing them altogether live comfortably in their fantasy world.
Something as simple as testing which Math textbook to use is never part of the process.
That's ironic, because amongst the group of teachers that's much of their discussion. They've also been poo-pooing the learning styles business that you linked to as long as I can remember.
Now, these are high achieving teachers, winning state academic competitions with their students and what not, so I'll admit they might not be the norm.
Teachers are required to do a ridiculous amount of ongoing education, inservice stuff, credentialing. Typically on their own time with their own money.
Whatever your obvious grievance is with teaching, it's not for lack of professionalism or training.
Veritasium did a very interesting video on the subject: https://youtu.be/rhgwIhB58PA
I do feel bad for kids whose symptoms were ignored or mitigated by interventions as described, and therefore were not diagnosed, only to discover at age 30 or 50 that the reason they've struggled so much through life is because they have an executive function disorder, the methods for effectively managing it have existed for decades, and they could've made use of them if only people didn't dismiss them in childhood as "rowdy kids" in need of more exercise.