I would have expected a responsible disclosure timeline, but it looks like he didn't report this to MS
Deliberately cheapening out on security because security researchers generally hold to a responsible disclosure procedure is not in the users interest.
This is not one of those inevitable bugs. This is an indicator that there maybe security issues littered throughout the system because no one cares.
This is one of the reasons that responsible disclosure policies exist, and why they are widely adopted in the industry. It is balance of risk and resources.