Couldn't agree more I've had to install an older desktop version of Outlook in addition to Microsoft 365 just for the file handling alone. Without it, receiving tons of attachments every day to maintain a corporate website, Outlook 365 is useless to me. Forcing me to use OneDrive? Please! Usability means giving your users the choice, not forcing.
Now I have the additional issue of Office licensing conflict somehow. It tells me that the 2019 Office Pro plus is not activated, and gives me a "Change Product Key" button, but when I try to enter a key, it does nothing. I'm in limbo. Why Microsoft, why do you make using your products an endless game of whack-a-mole? After 30 years+!