You are wrong on so many points.
- Turkey is a de facto dictatorship. Not a great role model.
- The Kurds did the heavy lifting dealing with ISIS, the US turning their back on a ally is such a bad move.
The right move for Trump would have been to insist that Turkey needs to stay peaceful and find a solution with the Kurds, that would have send a good signal to the World and would have made for a much better situation in the long run.
Now instead who will trust the US on anything, already Trump has stepped away from the Paris accord, the Iran deal, the TPP, burned friends with tariffs, choosing dictators over allies.. and now this.