What do you think the Republican reaction would have been had it been Obama who ordered an immediate troop pullout after a phone conversation with Erdogan? The excuses are just cover for Trump.
i agree the objections are politically motivated . The difference is the obama white house would not have had conservatives working in the administration leaking and spinning everything about Obama in a negative fashion as this was spun.
in this case Trump has been very vocal about leaving Syria as quickly as possible. Mad dog resigned over him wanting to do so. its likely that its one of the reasons that drove Bolton out . So everyone knew that while Trump had agreed to stay in syria a little longer he was itching to get out as soon as possible and probably looking for a new reason to do so.
Turkey saying they were going in was the perfect opportunity. let them deal with the mess.
but the story you present here is how its been spun by the military / intelligence community .
I dont know how much of a deep state we have but we have a military state that works to keep us embedded in conflicts around the world.