Why should placing your left hand fingers simultaneously be your goal when you play chords? To ensure you do not experience pain
in your left hand fingers To ensure you use appropriate strumming patterns with your right hand To ensure that only the pressed strings are sounding To ensure you transition quickly and smoothly between chords
I watched it a couple months ago and one of the transitions was dimming of the lights and/or a spotlight on shrek or donkey to divert attention from the changing set behind them