RifRaf,
On all Boeings the handle to lift the spoilers is called the "Speed Brake lever".
Boeing are also very clear that when correcting overspeeds in cruise, thrust lever to idle positions should be avoided. Thus the preferred method is to apply speed brake first. This protects against slow engine acceleration time at altitude and the risk of overcontrolling speed and inducing a low speed event. That's straight out of the Boeing Flight Crew Training Manual for the B757,767,777,787.
I would try and avoid the sweeping statements.