My point is that tens of millions of people think you should be able to manage files on your smartphone, but Apple makes that impossible without jailbreaking and Apple apologists routinely argue by implication that because they don't feel they need it, it's not necessary.
Not quite - it shows that they think you should manage files on your Android phone. iOS is designed to hide files, but Android has always had it as an option, which is represented in its interface.
Back when I used Android (owned a Nexus One which broke), I had to manage files all the time, because the individual apps didn't do a good job of it. Instead of having a centralised place for photos, I just dragged photos to /sdcard from my computer, and looked at them that way. When I had to put music on my phone in a hurry, I did the same, and navigated to them in the file manager instead of having it in the music app. I had a bunch of Markdown files that were there, too, whenever I synced manually. Now I can do all that without having to worry about where the files are, using iTunes and iCloud.
Since then, every time I've seen someone have to open a file manager, it's to do a job an app could have done. That's why Apple doesn't want to include one - it gives users more functionality, but makes app developers lazy. It's the same reason they haven't decided to include a stylus: it's technically more precise, but would just cause developers to think "don't worry about finger click targets, the user has a stylus".
For starters I'm not an Apple apologist. I use Apple products but I'm fairly critical of them. You don't have to be an apologist to have a specific opinion, and it's reductive to consistently frame counterpoints as "just another Apple apologist excuse". That's often what's bandied about, from both camps. So for the purpose of this discussion apologist, sheeple, iSheep, fandroids and so on should be verboten.
Second, if file management was a feature that people were crying out for in droves they'd either not be buying into iOS or they'd have created such a furore that Apple would have implemented it. Apple has responded to platform criticism by implementing the functionality as iOS has matured, they've just cherry picked what they're implementing to deliver the functionality that has a benefit to the most people. Aside from the obvious missteps like Newsstand or Passbook anyway.
If people want to manage files on a smartphone that's fantastic, there's a platform for them. Why is it a negative point that there's a platform that has a different opinion? It's not, there's a wealth of choice from smartphone players now.