For anyone reading Dan Meyer's blog for the first time, I'd highly recommend you search the archives for an article about a topic you know well. And use that to help you decide how much to trust Dan's opinion on other stuff, and whether his perspective aligns with yours.

He wrote an article heavily criticizing Math Academy's approach here: https://open.substack.com/pub/danmeyer/p/it-is-fun-to-preten...

But there's no evidence that he's tested it with a student in the target market!

He does link to article by Michael Pershan, who did kick the tires, but again, he didn't use it as intended over any reasonable period of time.

Based on their credentials, both Dan and Michael are people you'd hope you could trust if you want to learn about how to teach your kid math. Dan did his PhD at Stanford (under Dr Boaler) and Michael has been a math teacher for years, and has written at least one good book on the topic.

But they each seem to have a knee jerk reaction to anything that hints that it might replace human teachers, or anything that's only useful to a subset of students.