Except the terminal and a few other places.
While it’s very good looking, it’s not extremely practical with no difference (almost) between lower case and upper case letters.
One of these is potentially dangerous to others, and how do you not “recognize” your currency? Do you pay for food and utilities with wolfskin and eggs?
You sure about them not wanting to hold territory?
I can imagine the Turks keeping the “safety zone”, not to annex as a part of Turkey, but keep subdued to make sure the Kurds don’t try to come back