Detachable carrying handle will be hard to implement without a major re-design to move the charging handle from the center to the side.
But the main reason they are using those unwieldy scopes is more because they are being cheap instead of a lack of a suitable scope.
Those scopes stands used in that exercise are the same of the ones used on the Type 88 sniper rifle, just with a cheaper scope attached.
The scope displaced with the modified Type 95, which I just called the Type 95b for simplicity is a far superior solution, and barely requires the head to move up at all.
Here is a comparison shot between the Type 95 and Type 95B
Hopefully once they have done enough to these exercises, and the usefulness of scopes has been proven and the troops complain enough about the current jerry-rigged solution, the PLA will start issuing the new scopes.