I had this expectation too. Recently I started trying to use OneDrive. I had really basic expectations. But I’ve run into situations where multiple locations syncing the same files led to weird stuff.

Scenario- win7, win10, mac, phone had a folder called “admin” with multiple sub folders. Turning off syncing on a sub folder on one of these ended up deleting the folder and all it’s contents on all the machines. Renaming or moving folders has also resulted in unexpected deletes.

OneDrive is not Dropbox, but it reminded me not to do this with important files regardless that Dropbox has been pretty solid for 10+ years.

I’m back to rsync from “source” and not using OneDrive for workflow.