Even native apps that were built with cross-platform frameworks feel a bit "off" sometimes.
The worst kind is French banking apps or IBKR app: many features are native, but then because of some weird tech debt or incompetent tech leadership, they'll sometimes show you web pages in a shitty, slow, completely different UI-wise built-in WebView for mundane tasks like downloading a PDF statement.
Ironically applications are far more secure running in the OS sandbox than the browser if you're on Android or iOS.
Did you read the article? One of the author's main points is this is a deliberate result by vendors.