After which I was invited to meet Google AMP team and to express my concerns, you can read my Q&A here: https://www.alexkras.com/i-had-lunch-with-google-amp-team/
TLDR; A lot of concerns are getting addressed
1. Minor, but the bar at the top is now scrollable on all devices, including (finally) iOS: https://www.alexkras.com/amp-toolbar-is-now-scrollable-on-sa..., it was not when I first wrote the article, so it's a good sign.
2. It is my understanding that the team is actively working on a way to "fix" the link issue, and give an easy way to get to original article, although it remains to be seen how they will approach it.
3. You can opt out from AMP cache on the web site end, but it really defeats the purpose. Read more here: https://www.alexkras.com/i-had-lunch-with-google-amp-team/
4. Most importantly, looks like there is even internal pressure to give people an option to Turn Off AMP on the search engine side, if they don't like it. See this, for example: https://twitter.com/slightlylate/status/820344221450125312 @cramforce is THE tech lead on AMP and @slightlylate is also a big shot at Google on Chrome Team.
Personally, I have mixed feelings about AMP, on one side I really like the speed, on the other I hate how it breaks the Web as we know it.