Given that you are the tech lead on AMP at Google, maybe you can clarify a bit on this...but why the decision to group this interaction under Sharing? It seems like people are trying to just visit the original site, not share it, and one of the big criticisms has been that this is buried. Presumably putting it under Sharing is also a bit confusing because to many, "sharing" implies sending content to someone which describes a very different interaction than opening the original page.
Is it because "Sharing" in this case us meant to imply pushing the content to another medium (such as an external browser) vs. just the implied meaning of "sharing with another person?"
I'd love any context you can share from internal discussions around how prominent to make that functionality. I think it is hard to deny that Google benefits from it being harder to find, which is where the criticism from the parent is likely coming from.