I think that is ultimately the reason.
It's a two way street - fans g'ing up the players and vice versa players, by their performances, getting the fans going.
Currently it's like an engine that won't start.
I do agree to the fact that even they know they have beaten a poor and threadbare side doomed to L1 with 100% certainty.
Rob Staton described it perfectly earlier in the week - we are a 'wounded animal'.
There's not much sport in battering a wounded animal is there.