And this article does what is often done in the AMP discussion and (disingenuously) demonstrates that you can make a non-AMP page that's smaller/faster than an AMP page. No one ever contested that. No one ever doubted it. But AMP isn't the alternative to your minimalist page, it's the alternative to the grotesquely overloaded media site where over time every single web technology gets smashed into a monstrous, massive pig of a page. Comparing the AMP pages of a news source and what they serve in their "full" web experience and it's absolute night and day.
I do wish we had a "web lite" mode that we could turn on, if only for certain domains.