Last time I used Windows was 10, and I was able to find 4, 4 different fucking historical UI schemes/frameworks by digging deep enough into arcane settings menus.
I was working at MSFT when 8 released.
Broke every server tool, SQL Manangement Studio, fucking everything, for weeks.
We asked them if there was a way to go back to the 7 UI.
Nope! It's been removed!
... And a few days later, word of mouth and email chains start spreading an arcane series of override procedures to get back to the Win 7 GUI/Desktop, that is almost entirely still there... and after almost a month, our team finally gets the whole process forwarded to us or our team lead unofficially obtained it or something who fucking knows.
So much for 'its been removed'.
After a month of so of that, MSFT realizes that a tablet only interface for desktop PCs is fucking stupid, they make the 7 UI/Desktop into an easier toggle, and kablamo, thats Windows 8.1!
We totally planned this the whole time everyone!
I hate MSFT more than most, because I used to work for them, they're fucking awful.