You're 100% right. I've been consistently unimpressed any time I come across anything written or promoted by a faculty of education.

Sadly, it will take generations to root out, given the level of institutional control that academic departments have over their fields of specialization.

So we have to live with this state of things for now. As a consumer of education, you have to be smart. There are good teachers out there, but you have to check carefully by speaking to them and by observing the homework they give, observing their curriculum, etc. Try to visit the classroom if you can.

Don't be impressed by anyone's teaching credential, even if it's from Harvard or Columbia. Those schools are overrun by ideological fools just like every other education department. In fact, some of the silliest ideas are propagated from these departments

I wonder if there's room for a private teacher credentialing service. Unfortunately, the network effects may be too strong for one to really take off. Too many people are still too impressed by traditional institutional credentials, like the aforementioned Harvards and Columbias.

If you can homeschool, you should give it serious consideration. I'm not in a situation where I can, so I have to play the game of trying to figure out who's actually a good teacher and who's not. It's pretty tiring.