Earlier quoted context omitted.
The first time I used iOS I noticed a lot of things it considers "normal" are completely undiscoverable unless you know. Swipe down from the top. No, the other top. Click share, now click "find in page". Wait, that doesn't share at all?
"Share" is one of the worst inventions of all. What it does in phones is random across apps and platforms, and usually has nothing to do with what the word "share" means in any other context.
It's almost always to send the content somewhere, whether it's a platform, an app, the clipboard, etc.
Not always always, but almost always.