Is there even a UI for a user to select an older driver version from windows update?? I know you can do it if you manually get a .inf file, but thats a different flow.
If not, what exactly is this announcement saying? "Stuff that a user isn't able to install right now won't be available for a user to install in the future"?
I guess it comes down to the question of how much MS cares about old hard/software past its support window, versus delegating that to third party sites like vogons.org and praying someone has the relevant file still available.
However, I don't think filtering old drivers is a good way to combat this. Instead they should be popping up a dialog saying "Do you really want to install this USB joystick last sold in 1998? Older devices can pose security risks. If so, please enter your admin password to confirm. If you did not just plug in a USB Joystick, please [report it]."
Drivers for other random things like disk controllers are likely to be a lot older.
I can't recall ever checking a WU provided driver and not having to immediately go fetch an updated version from the vendor directly.