You are only further affirming the point I am making. You need a third party app in order to be able to browse files well enough on Android devices. And even then you do not get the same experience as you would get on a desktop OS. Simply because the same amount of information (file name, icons, creation date, change date, file size) which does fit fine on desktop does not fit as well on a phone screen without creating huge clutter.
Of course, younger users never really having used a file system doesn't work either. But certainly calling them "less intelligent and unrefined" is a ridiculous hot take if I ever saw one.
And you affirm my point, that its incredibly easy for anyone to take 15 seconds to install a file browser but most won't because they are too daft. A good file explorer does does have all the bells and whistles on any OS (except iOS) not sure what straw man you are attacking there).
The people who don't bother to do so probably are better off without it anyway, so no harm no foul and everyone is better off.
Of course, younger users never really having used a file system doesn't work either. But certainly calling them "less intelligent and unrefined" is a ridiculous hot take if I ever saw one.