If history is any guide, the concept of an "AI tutor" won't be used to "[give] every child their own personal Aristotle," it will be used to cut costs by replacing human teachers for low-status students with poor substitutes.
Seriously, think about how much money can be saved from firing most teachers and locking poor kids in a cubicle farm to stare at an insane "AI tutor's" screen all day.
And what's the strongest message sent by replacing human interactions with a machines?: "We don't care enough about you to actually bother to interact with you." Think of how you feel when you have a problem, you make a call to fix it, and all you get are phone menus.
And look at all the examples in the article: use GPT to generate crappy stories and educational games for kids to play. How can anyone think that's better than using a book? At least the book's stories and games can be tested and evaluated before use.
The actual problem here is the sociopolitical one of unwillingness to allocate enough resources to education to make it truly effective and satisfying, and that's one that technology can't solve.