the descent rate call was ignored at all, it may have caused the pilot to increase pitch, which agrevated the speed problem without having any noticable effect on arresting the descent.
I would simply call it an energy problem (kinetic + potential energy). At some earlier stage in the approach they had excess energy, they set idle thrust to lose some of that energy but they never returned the thrust to a 'normal' position and they quickly transitioned from having excess energy to being very energy deficient, they could no longer trade altitude for speed (or vice versa), they were short on both. Energy management during approach - this is ABC of flying.