All of that is totally fine and not what people are upset about. If your entire app is just a web browser that renders your website, that should be fine too.
The problem is when they render external websites and unsuspecting users think they are using the phone's web browser. That is something Apple/Google can have rules about without banning/restricting web views.
The problem is when they render external websites and unsuspecting users think they are using the phone's web browser. That is something Apple/Google can have rules about without banning/restricting web views.