I think you are doing a lot of assuming on how AI can be used for tutoring. I'm currently augmenting Chinese in person tutoring with a pi harness that helps me out with drills, lets me explore what things mean, get similar words or context related words and so on. It's not perfect, def not good enough to be a standalone thing, def has barrier of entry of being motivated to do honest self work but it's a massive value add into the process for me.

One huge issue IMO is that right now, around the world, most people are not taught at all how to learn for themselves nor how to critically think on their own. And that will indeed result in using it as a crutch and not a good tutoring tool.