I agree you could use LLMs to learn how it works, but given that they explain and do the actions, I suspect the vast majority aren't learning anything. I've helped students who are learning to code, and very often they just copy/paste back and forth and ignore the actual content.
And I find the stuff that the average self hoster needs is so surface level that LLMs flawlessly provide solutions.
If you're self hosting for other reasons then that's fine. I self host media for various reasons, but I also give all my email/calendar/docs/photos over to a big tech company because I'm not motivated by that aspect.