Do we see a common thread here? Turkish in Amsterdam-hands not on the throttles. Asiana in San Fran-hands not on the throttles. And now (very possibly), EK in DXB-hands not on the throttles.
Obviously, training for Boeing pilots lacking in some basic airmanship.
I don't recall the TY report, but the Asiana and the EK pilot both were trained on Airbus before getting the T7 endorsement. I have observed many times, that such pilots use the thrust levers more as hand rests than moving levers meant to be able to intervene.
There seems to be a very different paradigma originating from the respective companies. Maybe pilots trained on Airbus should simply stay on this equipment and vice versa.