Comment by judge2020

The problem (or rather value proposition) is that the only thing that matters is the end-user's perceived value, and that's almost always in the form of features and stability. Most people don't care that it takes an extra 10-100 milliseconds for the UI to react compared to a native app, especially given they just want to listen to music, which the app does just fine. If people specifically don't like the social features, they'll be mad at the decision to implement those social features instead of 'what they used for the tech stack' since ultimately Spotify could have developed the same features in a native app with just a few extra weeks of sprint, if that.