Hi, all my apps use webview with Admob and they are monetized fine.
I think you need to answer a different set of questions.
1) Does your app load a remote website (not the best if your core app depends on this)
a) If it does do you handle the error states, like loading failed or the site is down?
b) Do you prove that you own the content, like adding your app link boldly on your website
c) Can you cache the content for offline access ? If yes, please do, and update in the background if possible, when there is a network connection
2) Are your core app features or content available offline (without the need for a network) ? This is better
3) Does your app have enough content because you need to maintain a good content-to-ad ratio? You need solid content in your app, you can make it more full by adding images/video/audio to it, and not text-to-speech only like some apps do.
You can check out my apps and see how they work (especially
Examina):
All my apps: https://play.google.com/store/apps/developer?id=Punchline+Technologies