Reinhard62 "In 2014-2015, Microsoft underwent significant restructuring, including layoffs that impacted its Windows testing teams. While not a complete elimination of all testing functions, a large portion of the dedicated testing team, particularly those focused on hardware-specific testing, was laid off as Microsoft shifted testing to virtual machines and relied more on developers for testing.
This change in approach has been cited by some as a potential contributor to the increased number of bugs in Windows updates following the layoffs, though other factors like user error and driver issues are also mentioned."
I guess virtual machines don't have eye strain.