Looks like "Player on collision with Ghost" will never pick more than one ghost. In my tests, when player collides with two ghost instances, the event itself is triggered twice.
So, yes, seems like "For each" is not needed here.
But if this event could potentially pick two ghosts, then "For each" would be required because of that "Else" block in event 46. Without "For each" loop, if player collides with 2 ghosts, one of which has escape=true, and another escape=false, only event 45 will be triggered.