Damnit, you’re right!

But for real, I think you misunderstand the point of documentation. Even if something were truly, literally flawless, having documentation would still be a net gain. It isn’t only to fix something when it goes wrong, but explains how things are working. If the only way for something to be literally flawless in your world view is for it to be so self explanatory that an idiot seeing it for the first time still understands it perfectly, nothing in computing can be flawless in that way.

The pedantry on this point is so unhelpful as to be actively harmful to the rest of the discussion.

They didn’t say it required documentation, they said it had plenty of documentation should you need it.

Wild, without specifying, I had to check whether this was an app. I thought you were just being snarky at first! This is such a great but terrible name for a messaging app

I agree, without know how OP wants to customize, I’m assuming they want to customize the desktop GUI. If that’s the case, anything KDE will be a good starting place. They also implied they don’t mind if they mess something up, so the specs probably don’t matter for being the most resource efficient. It just needs to be hand-holdy enough to help get a little experience for them, then they can jump into a more hands on distro