Yes MS office can do it natively in the apps now. but that does use one drive sync. It didn’t have that support at first, so you had to use web version for collab.I assume the author is going off old info. That being said, I wouldn’t be suprised if MS tries to make the local programs a web shortcut someday.

Libre working towards live collaboration is huge, it’s probably the biggest modern features keeping IT nerds from pushing to their bosses as a free replacement for Microsoft.