I can't be bothered arguing about the Beatles, fail to see the point.
John v Paul, Paperback Writer v Long Tall Sally, EMI v Trident, first harmony line in From Me To You v the six harmony line in There's A Place. Debate and discuss yes, but argue - no thanks.
I suppose not being able to tell the tone intended in someone's words doesn't help; what might be meant as a passive or tongue in cheek remark to lighten the air can instead by taken as some smart alec riposte that stokes up the fire and spills ...