Earlier quoted context omitted.
People have been developing on OS X outside a VM for a while now, and OS X is most definitely not linux. If they can get WSL to be as linuxy as OS X (and arguably it's already close), Windows will be as good a dev platform for linux development as OS X. But they really need to fix notepad so it supports unix style line endings. That part of the demo was a bit embarrassing.
I love watching people developing on OS X, targeting Linux, without proper tests forgetting that Linux's FS's are by default case-sensitive in regards to file names, and completely forgetting that OS-X is case-insensitive, by default (and recommended to remain so, because most OS-X software is not developed with case-sensitive file-system awareness.)
A few years back, following my previous laptop which had been a flimsy Acer running Ubuntu which became unusable following malfunction of the fan, I was looking for a more sturdy laptop and ended up buying a mid-2012 15" MacBook Pro which came with OS X Mountain Lion I think it was. Being used to case-sensitivity from various Linux distros and on my FreeBSD servers, I decided to enable case-sensitivity for the system drive. That turned out to be quite a mistake indeed. Several pieces of software were unable to find the files they needed, so I ended up reinstalling the whole system shortly after, this time without case-sensitivity.
Following that I had a hardware problem that the Apple authorized repairshops I went to were unable to fix three times in a row so I ended up demanding a refund (Norwegian customer protection laws are good in this regard), and while I still think OS X is an impressive system I lost a bit of my respect for Apple after that experience. (I enjoy my iPod touch though.) Anyway, the reason I mention this is just to say, I don't know if case-sensitivity remains problematic in macOS. I find it highly likely that it still is though.