You're looking at it from your perspective for what you want, most Windows users are not like you, they're businesses that pay for expensive apps which will have no problems being available through Windows store, or home users that just use it for school and web browsing. Now for the users who are like you, they're still jumping through hoops to bend Windows to their will or stay on Windows 7, you guys are willing to put up with a lot, so they don't have to care about you. You'll always be there.
You're already saying you won't jump ship to Linux until your games are gone, which means you're still planning to stick with Windows. MS will continue to let you run Win32 on Pro versions of Windows, so you won't lose your steam library. However they will stop updating Win32, so games will naturally end up UWP and on the Windows Store, so Microsoft doesn't care. Once that happens, they will make it more annoying to run straight Win32 apps, forcing you to side load them, perhaps only allowing certain features such as Games Mode and Beam and other built in crap to work with UWP software, and sure you don't care about that but in the future it could mean forcing Win32 support through a separate VM controlled by hypervisor, effectively splitting Windows, and then let support for that wither off and die.
By then you'll be getting all your games through the Windows Store with the shift to UWP anyway, Win32 won't cut it anymore when its APIs no longer offer up to date security. MS will tell developers to switch to UWP if they want to use DirectX 13, and other patched and secure APIs (compared to the rotting Win32 ones anyway) and suddenly running non-Windows Store Win32 apps will be considered a liability.