Did they not use 2000? Or XP? Or even 7 for that matter?
As much fun as it is to hate on Windows, if I'm honest with myself 10 has been the most stable experience I've had with Windows, with the possible exception of 3.11 (though that was a long time ago).
The deletion bug WAS pretty bad, but it also affected a VERY tiny group within the subset of users that had opted in to experimental/advanced-preview updates.