Your IT team is doing it wrong then. You can map SharePoint sites directly to file explorer. Now that brings on a whole different set of issues ala OneDrive, which IMO is an even steamier pile of shit, but still - it’s better than going straight through Teams

This is not exclusive to Apple, any pre-built reseller does the same thing, Apple just has their flair of a little bit more

I guarantee you I know thousands of people’s passwords as well, I just don’t know the username associated.