Plus, it's a generic question; "give a helm chart for velero that does x y and z" is as proprietary as me doing a Google search for the same, so you're not giving proprietary source code to OpenAI/wherever so that's one fewer thing to worry about.
I'm not sure if it's a facet of my ADHD, or mild dyslexia, but I find reading documentation very hard. It's actually a wonder I've managed to learn as much as I have, given how hard it is for me to parse large amounts of text on a screen.
Having the ability to interact with a conversational type documentation system, then bullshit check it against the docs after is a game changer for me.
Then there's also the issue that examples in documentation are often very contrived, and sometimes more confusing. So there's value in "work up this to do such and such an operation" sometimes. Then you can interrogate the functionality better.