The greatest scam of Google and Apple is convincing millions of developers to learn Swift and Kotlin to make apps on their stores that can be swiftly (pun intended) removed from their stores. Though the average developer is unlikely to ever be banned, why even risk it?
Think about the performance hit of apps that don't need to be native apps being ported to Web Apps. Let's be extreme and say it's equivalent to a Native App for a device 10 years older. Alright, so a modern Web App is equivalent in performance to a 2012 Native App running on a flagship. That's iPhone 5 and Galaxy Note 2. Make this conversion once and optimize your app and you'll never need to worry about your app being pulled ever again. Not to mention you can write your app once and it'll work on all platforms.
At least in the case of this particular app it can be sideloaded, so it'll be fine in the end, probably.