I think it is more about convenience. If you are already lured into a certain cosmos, given a certain context, some additional features can make sense and later

I think it is more about convenience. If you are already lured into a certain cosmos, given a certain context, some additional features can make sense and later on give an app a shift in meaning. Think about Google Maps and certain recommendations. "The goal for most apps, especially social media, is to sustain user retention for as long as possible" That's it. And that's why I chose Kindle to be my go to app. No FB nor TikTok installed.