A decade ago the open sourcing of any major program by Microsoft would have FOSS writers in a tither, even if released under the GPL.
We would’ve been uber suspicious, certain that this was only the front end of a plan to end Linux and FOSS as we know it. As for the Windows security woes, we’d be rubbing our hands with glee, writing paragraph after paragraph on how much this proves the inferiority of Windows and the superiority of our beloved Linux. In those days, we had to take our good news wherever we could find it.