A specific implementation (OneDrive) doing something dumb doesn't invalidate the entire paradigm though. Things work just fine elsewhere (Dropbox, Google Drive, Nextcloud, and Seafile are all solutions I've had good experiences with).
Agreed, I’ve been using Dropbox for 15 years with minimal issues. The key is to ensure it’s running and syncing with the proper settings on both machines.
What can get things into a weird state is if both machines are editing the same file while only one of them is actively syncing. But for basic backup and sync, this is extremely rare.
