As far as I am aware, it should be reset with every Feature update - so Twice a year, this is the same as all other "core" features/Systems. This has caused a lot of annoyance for many users so may be under review.

It was always the case with an update to a New windows EG an update from Windows 8 .1 to Windows 10 and the major bi-annual updates retain this methodology

Onedrive is also a potential money earner for Microsoft if users get "into" that way of working they may subscribe to more online storage from Microsoft