Strangely, their new ad platform appears to be pretty gameable in some respects...
https://medium.com/@johnnylin/how-to-make-80-000-per-month-o...
That said, they just denied an app I released (here on Google Play https://play.google.com/store/apps/details?id=com.pavlok.mee... , it syncs my content from different media sources around the web) was denied. They said it was too close to a web experience.
We've released several iOS and Android apps, and inside of our apps are mini-apps (different habits and behaviors our users want to change). The app we were attempting to make used React, which was giving us a headache.
The denial was annoying, but fortunately, iOS just enabled PWAs. It seems to my developers that the site is essentially Web technologies (HTML/CSS/JS) + a Manifest. By doing that, you can enable push notifications and offline access. Is that essentially it? Because that might solve the problem of making apps rapidly on multiple platforms for us.