Really? I would think they would be better utilized being deployed on our own border.
We still have plenty of personnel and hardware on that side of the world if we’re needed, not to mention other situations that need to be resolved.
The point is to not be needed. As long as they are in place on the Z, fatso will behave. IF they are moved, he may think he’s conned us at last and start pouring troops into South Korea, or at least acting provocative. If they are needed elsewhere, they are right in an important area and can be redeployed. But for now, when this charm offensive is nothing but words and gestures, best not to flash a target to fatty, in case he has a “sudden” change of heart.