I get the impression that a lot of the old guard are long gone from the Windows team or have no influence. Raymond Chen is still around but not sure how much he actually works on Windows day to day.
Math is hard.
Says who? I did a gap year service project and graduated at age 23. My business partner did a 3-2 program and graduated at 23.
Plus, anyone working as an engineer then has a 8 figure net worth and the overwhelming majority moved on long ago.