While I am inclined to agree with most of the article, the following snippet really turned me off:
It all starts in the first grade where teaching methods are used to deliberately cause dyslexia and reading disability. Note: underline added for emphasis.
I'm glad we homeshool for a lot of reasons. It has been rewarding in many, many ways. I have problems with state-sponsored education, but I don't think that public school teachers are deliberately trying to give children dyslexia and reading disabilities (whatever that means).
I've heard good things about the author, but this is the first of his articles I've read. I'm willing to give him and his views another chance, but I'm not impressed with his work thus far.
The teachers aren't deliberately trying to give children dyslexia. But neither did Blumenfeld say that they, the teachers, were trying to do that.
Go back and read his sentence again. He said teaching methods are doing this. The teacher is simply the carrier wave -- the user of the methods. They know not what they do.
The question you might want to ask is who develops these teaching methods? Where are they developed? Who finances it? Who controls the "research" that supports it?