My partner uses Windows 11. She works and also studies in college. In both places they use Office360 so, she has her laptop set up with her Microsoft accounts and switches between college one and work when needs it. The other day, she came for help asking why the college OneDrive was getting full when she only has documents. Turns out that the fucking OneDrive decided to synchronize the whole user personal folder (where she has very personal stuff) into the college's OneDrive. Surprisingly, disabling such a wrong behavior was not straight forward as I expected. Microsoft has managed to make it ambiguous enough for having to spend a fair amount of time on such a simple thing.
I don't know it's just another example of them trying to shovel down your throat their cloud services or just some obscure plan to simply have access to all your very personal data (or both).