This is such a strange reaction from HN. The AMP cache URLs have been a top 3 complaint about AMP here. "I can't copy-paste URLs, it's hard for users to understand which site they are on, it looks like the content is provided by Google rather than the real provider", etc.
Now there's a solution that preserves the preloading and validation benefits of AMP caches but maintains the original URLs, in a way that's cryptographically sound, in the process of being standardized, and controlled by the publisher. This gets launched much faster than one would have expected. And suddenly everyone pretends that the AMP cache URLs were never a problem and this is some kind of a power-grab.
Now there's a solution that preserves the preloading and validation benefits of AMP caches but maintains the original URLs, in a way that's cryptographically sound, in the process of being standardized, and controlled by the publisher. This gets launched much faster than one would have expected. And suddenly everyone pretends that the AMP cache URLs were never a problem and this is some kind of a power-grab.