The Kurds captured all that land fair and square, a civil war is going to be happening there regardless.
Especially with Isis now getting more ground back because the opposing armies pushed so far it offered them the opportunity to flank around and take back provinces they had before.
Kurdistan needs to be a thing as much as the Syrian state should stop being constantly threatened by the West.
YPG are dirty commies though, but then again the Kurds are extremely spread out with different groups and divisions so I wonder how their government will work out.
Hopefully they won't be constantly harassed by Israel though, they like to mingle in affairs that are not theirs by bombing and shelling whilst threatening behind big brother US.
I especially love the relationship between Russia & Syria though, Assad has been portrayed extremely bad by the media with constant lies and propaganda against him over the years, keep in mind that Assad is pretty much the only leader in the Middle East that doesn't hunt down Christians and actively cares about his own people, actually caring about civilian deaths.
FREE SYRIAN STATE
FREE KURDISH STATE