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".