It's hilarious because what you're asking for is NOT the real reason this file system access and management is pushed for so often...this is clear from the kinds of things you find within the android community and their rooting adventures. Let's be real here...the entire desire is a niche...the people who want it to do like you said (and other small, convenience based functions) is a niche of a niche.
People act as if there is no option on the iPhone to perform such tasks...and this is what is funny to me. People want a native function instead of using these very common work arounds. And while there's nothing wrong with an opinion or desire (for instance, I'd like the iPhone to be water proof or at least similar to what the Samsung "Active" line offers), but in the case you're describing, you have options, and ones that are really quite effortless if I'm honest.
The dark side of a file management system (even a simple one) is what everyone likes to skip over...people like to focus on the productivity and good it will do for them, but they forget that these things bring with them a very wide opportunity for exploits (and ones that can be difficult to impossible to control because of what a access like this really allows to the OS itself).
I'll be honest with you...you can name drop Rene Ritchie all day long, I could personally care less, he's just a person in the world with an opinion (not unlike myself or you). The reality is that even if hundreds of thousands of people out there wanted this feature...hell, even a million of them...in the end, they're going to cater to the majority, and within that, the majority prefers a clean, safe and protected file system...Apple knows this, and they base their feature philosophy on this safety net, which in turn keeps so so many people in their pocket. Why would they just up and change it because a niche of the market complains that "Android has a legitimate advantage"? What value is there in an advantage when Apple leads the pack in sales and customer satisfaction?
And here's the kicker...I wouldn't mind a file system manager either. I think there are a few things that could become more fluid with that functionality...but there's no way I'd trade off what I have come to love about iOS just for that small convenience factor.