> For example, the about box in an Android app bundled a whole different browser engine which circumvented device policy entirely and allowed data to be exfiltrated. This app change was delivered in an update by clueless or lazy developers. This is not possible on iOS due to the platform restrictions.

If this prevention is by OS security, then your complaint is about the OS.

If it us by store guards, then yiu complaint is about the store.

So sorry, but I don't see how your complaint is properly about the browser engines.