maximum-scale and user-scalable=no seem like browser mis-features. Perhaps the OP would have more success appealing to browser developers to follow Apple and Samsung’s lead, and get browsers to ignore them?
It's definitely always a mis-feature for websites. It can make sense for webapps in rare cases [0]. Well, disabling the pinch gesture makes sense for those, ideally the browser would still provide another way to change the zoom.
