One could run Linux and use Wine to run some Windows apps. On the other hand one can run Windows and use WSL to run some Linux apps. Depending on the individual's needs which apps are important to have access to the decision could go either way. This is why Microsoft is investing in projects like this - to tip the scales and lure more users to run Windows as primary OS.

P.S. And then there is Google which wants you not to care about OS as long as it could launch Chrome browser, and to use web apps instead of native.