The Kurds have been a pawn in the true conflict for decades. The true conflict here is between Russia and the USA.
Syria has been an ally of Russia since forever, providing a strategic naval base at Tartus. The base fell into disrepair after the fall of the USSR.
The US wants to deny Russia access to this port.
https://en.wikipedia.org/wiki/Russian_naval_facility_in_Tartus"Tartus is the Russian Navy's only Mediterranean repair and replenishment spot, sparing Russia’s warships the trip back to their Black Sea bases through the Turkish Straits. It is the Russian Navy's only overseas base."The USA doesn't give two shits for the Syrian people or the Kurds.
Nobody gives two shits about the Kurds. The US has abandoned them in the past without a second thought.
Ultimately this is about the control of oil in the Middle East.
It always comes back to oil.
The US is now a great oil producer again. No need to war for oil.