Well, one point that has been made is that "Windows stuff" being EOLed, accompanied by legal threats, will actually encourage people to think twice about buying hardware that requires a driver tied to a specific OS version.
Sounds like a good thing. :)
There are also situations in which Linux uses Windows drivers in a "wrapper" when native Linux drivers are either absent or inadequate (generally due to NDAs preventing our developers from getting complete HW specs). I don't know if that extends to WinPrinters, but there's no technical limitation of which I am aware, that would prevent it.
Sounds like a bad thing, that needs to go away. Hardware like that ought to remain unsupported until the manufacturer either provides an open driver or provides the specs.