It becomes even more approachable by "Winux". Let people learn the basic of the CLI and get comfy with more open source tools -- then reinstall your computer to a Linux distro (and put your Win-only apps in a VM or on Wine) is a small move.
I highly doubt that "Winux" will really result in a large increase of people learning CLI tools. People that want to use those tools already have way that they're doing so. Consider that most people have difficulty using a basic word processor, much less Unix tools.
I'm considering the masses. But many in higher-education are on Windows (my experience here in the Netherlands). I can imagine that, for instance, they will use Winux at some point.
Same for some IT professionals that use Windows (either since their job demands it, or out of preference). They might install Winux at some point to get some aspect of their work done faster. Again a lower barrier to get your CLI skills up and get comfy with common open source tools.
I believe there is a lot of value in "CLI skills and common open source tools" that Windows users are currently missing out on.
It becomes even more approachable by "Winux". Let people learn the basic of the CLI and get comfy with more open source tools -- then reinstall your computer to a Linux distro (and put your Win-only apps in a VM or on Wine) is a small move.