Been learning Linux, how to build a homelab, and quite a few other related topics since about chatgpt 3.5. If the LLM went away tomorrow I'd still know how to do most things in Linux, set up my opnsense router, reinstall xcp-ng, do everything in docker, and a boatload of other things that would've been so much more tedious to learn before an LLM. Simplicity of access to knowledge doesn't mean you don't learn it. A google search didn't make us learn slower than when we had to scour for books at the library, it increased the pace dramatically. Same goes for LLMs.
You can use LLMs and learn nothing. People who like to learn won't ever use it that way.