The whole OneDrive ecosystem is scary as hell. I don't want to imagine how much mess they have in their backend, given that most Microsoft 365 products rely on

The whole OneDrive ecosystem is scary as hell. I don't want to imagine how much mess they have in their backend, given that most Microsoft 365 products rely on SharePoint in one way or another. And then, sometimes you get a "peek" of what's happening behind the scenes (spurious folders, random files appearing, hidden libraries, etc...).