It’s a terrible trap for a smart person, to assume that x,y, or z is “something which is known to each and every schoolboy,” you know? Everyone isn’t like you.
The point is that the apps will display it where they display Open-Source license notices: off in some deep menu no one but a suitably dedicated hunter would find.
Right, but most people wouldn’t even consider that. Most people don’t even know what “open source” means! It’s hard, but most people live in a combined state of technical ignorance, and a kind of aggression toward learning new things in that field. The result is that the average person thinks it’s all techie noise, so what you consider incredibly basic concepts are really overlaid on a framework of existing knowledge, intelligence, and most of all, interest.
I think we're talking past each other and agree that people won't look for the probability or, even if they see it, won't care.
I am not assuming people look it up. I'm just pointing out this isn't really changing anything because people who would look at it or care, already could look at it often... but most people won't, so the change of requiring apps to show it in the app matters basically not at all.