Right so that's proven beyond any doubt that "drums do NOT improve atmosphere".
I must have imagined all those games I've attended in Europe where a well used drum keeps the tempo right and prolongs the songs. (why the hell do we speed-up when singing GOSBTS?)
I sincerely hope that everyone who said "NO" to a drum sings at every opportunity to try and lift the atmosphere, because evidence of for e.g. the first half against Newcastle, 90% of the crowd is willing to just sit back and mumble to their mates about their pie being too hot.