A couple question for those with this point of view:
1) Do you think users notice when they are using AMP articles today, even though the URL has not been hidden yet?
2) Do you think it would actually matter if they did notice a Google-hosted URL? Would they boycott Google or change their behavior somehow?
3) Do you think Apple has the same motivations as Google? Safari has been hiding www, scheme, and path for a while now. Do you think they have any valid reason for having done this?
4) What do you say to Google's stated reasons for making this change (simplicity and security)?