What effect will this have on the ability to boost driver support in Linux, if any? FreeBSD has ndisgen [1], but would this help improve that or a broader set of driver use in Linux?
It means nothing. WDF is a high-level framework for drivers on top of Windows NT – basically a convenience library you link with. While using WDF, you can freely call regular NT functions too.
I wasn't trying to imply it didn't have an equivalent ndis tool, I just used FreeBSD as the example as that's my experience. I was more wondering if this would've helped advance these (and similar) offerings.
Secondly, what about WINE?
[1]: https://www.freebsd.org/cgi/man.cgi?query=ndisgen