Earlier quoted context omitted.
The article is also surprised that people are still using AMP now that it's no longer required, because in the author's mind, AMP is so god dang awful that when given the chance, everyone would immediately want to get rid of it. Some people are so deeply lost in their hatred of AMP that they cannot even consider for a moment that maybe, just maybe, AMP actually does work well for some people. I'm glad it's no longer…
My opinion is regularly "unpopular" here on HN, but I happen to love AMP. Sometimes constraints can be a blessing. Don't want to over engineer? Use AMP. Of course you can over engineer anything, but why would you when [almost] everything you need is easy to grab a la carte.
Also, I'm not sure this is well known, but if you navigate to a web page from the carousel, Google traps the left and right swipe events on YOUR page. Either sends to user to a competitor. That's a pretty big compromise you would only make because the traffic boost from the carousel was worth it.