This is such a bizarre article.
"Apps are a hassle, everyone needs to be on the home screen, and it's bad for re-engagement because user isn't ready to sign up yet"... "web is hassle free so we need to make sure we have better ways of installing web apps on the home screen where developers can then engage user with notifications and sign ups".
Then the author confuses trackers and over-reliance on frameworks.
And then "Re-thinking the web" starts with... "re-engagement features like push notifications being added daily" which is definitely not what a re-thought web should be about.