> further shame people into following better practices
"Better" as prescribed by who? At this point, I'm under the impression that if you're not implementing AMP for content, Google is going to rank you lower and now publicly shame you to users. They _say_ this is not the case, but it's impossible to ignore now that they're introducing naming and shaming. It just seems like features way outside the scope of what a web browser should be providing to users.
Editing to add my other thought:
I've built websites that routinely score horribly on Google's proprietary PageSpeed Insights despite fixing everything within my power (usually Google's own analytics scripts score badly), but also score very high on every other reasonable industry test of similar nature. It's hard to convince me that they alone should be an arbiter for this type of feedback given to users.