There's nothing inherently wrong with an app store as long as you can choose alternate stores (like F-Droid) or are able to sideload. (as OSX allows) The issue

There's nothing inherently wrong with an app store as long as you can choose alternate stores (like F-Droid) or are able to sideload. (as OSX allows) The issue occurs when you're locked in to Apple's store so you're at their mercy. However, there's not much you can do other than to use software that grants you those rights. Apple is free to lock down their software as much as they want since it's theirs unfortunately.