Pre-release multiplatform devs severely underestimate how time consuming testing in all platforms is. So, much that they prefer no changing anything to avoid having to test it again. The app gets to MVP and stays MVP forever.
Discussion
I remember a few years ago installing the Android version of one of my favorite iOS apps (some photo editing app I don’t remember the name) and I was flabbergasted 🤣 It was so bad compared to the iOS version, and several features/versions behind.