One thing that's uniquely advantageous for me with WSL is having multiple distributions at hand all atop Windows without the hard lines of traditional VMs. So I use Ubuntu on WSL for stuff like server/network admin. But if I want to work on some code for my RPi GPIO project, I can easily access Debian on WSL (where RPi libraries will actually install), all while still having the primary OS be Windows (which confers a lot of advantages in daily productivity app use, games, etc).
I'm not sure that a Mac (for instance) can match that kind of flexibility as elegantly. I may be an edge case in not sticking to one distribution but I definitely see the whole system as a uniquely better environment because of that flexibility.
