This has been coming for a couple months. The Kurds have been all but told "get the fuck out, Turkey coming" and the backchannel talks have been how to handle the Kurdish withdraw. Any Kurd left in Turkey's path as they invade is being left to die by their leadership not American policy.
Kurdish Militia have a hard time justifying their presence in Syria since its not a traditionally Kurdish area, they mainly just rolled in to fuck up ISIS after ISIS made the colossal fucking mistake of attacking
There two types of Kurds. There are real, actual honest-to-god Kurds you will likely never meet because they are in the traditionally Kurdish lands living and working for independence; they are generally pretty cool & not fundies - they have their share of assholes, but no worse than any other culture.
And then there are a bunch of shitskin turks who have a great grandfather who once touched a Kurd with his bare hand, so they use that to claim asylum in non-shit countries.