Okay, sure. The Files app is buggy that transferring files is not a reliable aspect of the app - something I think is pretty well documented here on the forums. Hence the reliance on 3rd party apps to get things done. Well, the 3rd party app has a pretty hefty security issue. In fact, I've already reported a few security issues with this app which is now making me concerned about what I don't know about.
So making the OS so dysfunctional and needing to rely on 3rd party apps is a bit of a fail no?
EDIT - getting frustrated on a daily basis so I do apologize. My kid is doing home school now and she took my 2013 MBP which can multitask like a beast. I've been trying to get a solid grip on the 2020 IPP but I find it severely lacking.
While I agree the Files app could use some improvements it is based off Finder in its rudimentary code, even if limited. Transferring files from within itself with local storage or iCloud storage or the hooks from Mega/Box/DropBox all work rather VERY good that I’ve used in the past year very well - iPhone 8, iPad Pro 2018 and iPhone SE ‘16 - no issues.
My issues with iPadOS Files app stem from using an external HDD and SanDisk USB key both connected to my HP Thunderbolt 3 Dock G2 (120W) unit ... using Files to move/copy MP4 content from the HDD to the external USB. I have to ensure I don’t leave the app else it corrupts the files.
Corruption of files & names:
when copying MP4’s from HDD to USB ... ends with files marked with strange names (which I cannot see until I connect the USB to my Rogers modem and open using VLC on ATV4).
Corruption of MP4’s:
The issue is when files are copied the names are valid yet does not play back on ATV4 - again this is using the HP TB3 Dock G2 I have.