I thought about this before, and mostly agree. My mom knows nothing about computers and could probably use Ubuntu if I stick it on a machine and gave it to her. The thing preventing me from doing it is that when things go wrong in Linux, it often requires extensive terminal usage to fix. And my mother can often find new and creative ways to break a computer. If something went wrong with it, I would have to fix it. There is literally no one else she knows who would even know where to start. At least if she’s on windows, she can find someone to help her.
The problem is that the places where this technology would be useful also happen to be the places with little to no humidity. You can’t pull water out of the air if there isn’t any.
The places where this would be useful are places with high humidity, but then water sources aren’t usually an issue. You’d have to have a region where it’s very humid, but doesn’t have access to drinking water. I don’t imagine those are particularly common. Such a region would probably benefit more from water treatment than pulling it out of the air.