Almost certainly, but that’s no reason to immediately discount it.
Though I do think there is vast potential for such things, it needs to be approached judiciously.
Duolingo (at least for the same language) has correct pronunciation and grammar/words, even if it's not a good way to learn.
If I were fine with AI, I could just prompt the LLM myself to create a course perfectly catered to me. Why would I need you? Because your prompting skills are magic? Yeah, no. That is like charging for google search results because you searching skills are so great.
The whole problem with Duolingo is that it got so much worse once they started using AI. Switching to another AI driven project would be out of the frying pan into the fire.