I love Android but Android does that too. Apps have their internal storage area which you can't access unfortunately (not without root anyway). Nor system files.
There's a difference between "can't see 'special' folders" & "can't access anything but the app-specific storage". iOS loves the latter, while Android lets you organize files mostly normally even if doing highly stupid/discouraging things for power users & some app developers making questionable non-default choices.
When I had an iPhone (a few months ago), there was no way for apps to see files in the filesystem. I wanted to play some music and I had to copy it over to each of the music player apps separately. Is that not the case any more?
Am I supposed to be mad about them not supporting a feature during a time when I didn’t use iOS or is this somehow supposed to impact my current day use of Files app?