Respectfully, I'm having a hard time following your point.

Originally, you linked to a pamphlet and implied that the authors of the pamphlet were "actively undermining the American spirit". I pointed out that the packet appeared to provide good advice for math instruction. You responded "perhaps you should question your stance based on what apparently is a marketing pamphlet precisely designed to persuade people". Why did you link to it then?

What information are you pointing me to that would "convince [me] otherwise"? I read the letter you linked to, and it provides no arguments. As I said previously, it is mostly a list of names of people who are publicly stating their disagreement with a different document - literally appeal to authority fallacy.

I think you would be surprised how much we are aligned on the importance of math education. I'm an engineer from a family of engineers. I clicked your link because I have a son starting kindergarten in a California public school in two and a half weeks. But I was pleasantly surprised to see that the math education being advocated appeared better than the one I received, not worse.