I have some two million KA points, and I'm currently using it to guide me around learning basic physics - I've never used Khanmigo not even once. If I need to ask AI type questions I go off site to Claude or GPT or deepseek.
As other people have noted, asking a.k.a <i>typing</i> questions, especially math-type is fatiguing, and there's no substitute for pen and paper and thinking hard.
KA would be better off using AI on the supply side (but heavily curated) to have more assignments, or better assignments in some sections.
But it's important to recognize KA for what it is, and it's an excellent way to have some sort of a basic curriculum, especially when self-studying, and all of the instructors have great teaching personalities, as far as I can deduce from the approach in the videos.