You've made a fair observation, but being strictly correct in the naming, in this case, is probably not helpful for Microsoft or users. "Windows Subsystem for

You've made a fair observation, but being strictly correct in the naming, in this case, is probably not helpful for Microsoft or users. "Windows Subsystem for Linux" sets an appropriate expectation with me (the user) that I will get an experience not dissimilar from installing a real Linux distribution of one sort or another. For Microsoft, it's simply the easiest way to market that idea in the product. No matter how much someone like a Richard Stallman would like me to differentiate between Linux (the Kernel) and the large proportion of GNU utilities that are the common tools of a complete system, in practice I simply think of the whole lot as "Linux" and probably always will... regardless of how fair, important (or not), the distinction actually is. I expect there are many more who think like that than not.