Google has been encouraging those sites to run all that extra cruft by:
A) Not de-ranking sites that are large and slow
B) Asking them to run a bunch of unnecessary trackers (Google Analytics)
I've never used AMP, but it does sound like it is fast, and web-page bloat is indeed a problem. But adding another layer (which also just happens to make you more beholden to Google) isn't the right way to fix that problem, removing the bloated layers is.
If I encourage you to murder someone, and you do it, I'm party to murder. If I don't care about you either way and you murder someone, I'm not party to murder.
The result is the same (you murdered somebody), but it very much matters if and how I was involved.
A) Not de-ranking sites that are large and slow
B) Asking them to run a bunch of unnecessary trackers (Google Analytics)
I've never used AMP, but it does sound like it is fast, and web-page bloat is indeed a problem. But adding another layer (which also just happens to make you more beholden to Google) isn't the right way to fix that problem, removing the bloated layers is.