Yeah, but when it gets to the point where, like in the Steve Beaton game against Magnus Caris, the fans (of Beaton) began to, in unison, go whoooooaaaaaaa! getting louder until Caris threw his dart. That was way beyond unacceptable.
Caris was well ahead and was visibly upset by this treatment, the game requires a fair amount of concentration, and Beaton won a match, that he should have lost and would have, had his supporters not acted in this unfair way.
