Honestly, I doubt that LLMs are great for learning. Too often, they output plausible-sounding things that turn out to be completely wrong. I know Wikipedia can have its problems with factuality, but this is on an entirely different level. (And yes, they do this even when they're allowed to do web searches and "reason".)

The effort of verifying everything it claims may or may not outweigh the effort of other means of learning.