Surely the main reason there's a shit atmosphere is that the songs are boring and shite. Is there a fire drill, is this a library, your support is fkin' shit., you're not singing anymore, 1-0 and you fkd it up, etc etc.
I was working up there back in the 80's and went to see them play Dundee at home. Big Dundee following behind one of the goals on a steep grassy bank, half time all/most facing away from the pitch having a piss!