You make it sound like $50/hr devs are stupid and not able to devise such a clever trick but reality is not like that. Sure there is a difference but it's not

You make it sound like $50/hr devs are stupid and not able to devise such a clever trick but reality is not like that. Sure there is a difference but it's not in your example, the pre-uploading feature was hardly there in the first app versions and it's not something that some smart iOS dev invents on a whim and bakes into an app, it's a deliberate feature requiring collaboration between several teams. Most of all, features like that are created because there are (amazing) devs whose sole job is to make the app better, and they've been doing it for what, 6 years now.