It's a bit of a gamble. Apple used to be much better at accepting webview/hybrid apps, and I'm assuming that if you published some years ago, you wouldn't have as much risk. Now, however, sometimes they use "no benefit over web version" as a way to prevent apps from sneaking in features that they can't control. If you serve the app via webview, nothing really stops you from passing review with compliant features, and changing it any moment after.

It's not really "fair", because native app often has exact same functionality as hybrid app, and still gets approved with less scrutiny.