FIFA's intent was to do away with the time-wasting tactic of playing the ball to a GK's hands and then restarting an attack. GK on goal line with teammates on either post. Shot on goal, at post, trapped by defender's feet. GK falls on ball. If we judge these actions in terms of time-wasting, we play on.
Defender has ball at feet.
Kicks the ball toward a teammate. GK leaps for the ball and covers it with hands. If we judge the actions in light of an attempt to waste time, we play on. As Refs, we look at the actions and make a judgement of intent. A player in a battle for the ball may play to the GK, and FIFA requires that the GK play the ball without using their hands.