Perfectly fair. I find that too restricting and cumbersome and unfortunately o can get the job done much faster on either a desktop (most often my choice) or android (my choice when the latter isn't available).I don't think in terms of "files" anymore. I think of which app I need.
On a basic level I feel like I'm felinquishing control, regardless, since if it's not in the App Store (given the green light by Apple) I'm just not doing it. I work in the coronary medical field and there are certain applications we use for work that are simply not compatible with how apple does things (in iOS).
Anyway, your statement about how you think is exactly Apple's vision, for better or for worse. And again, it's not wrong. But I don't think those who think differently than you are wrong either.