People aren't responding with "Oh I didn't know that".I mean, that's obviously why. I'm not sure people are fully understanding just how much no one knows who that is here or that there's even an artist associated with the hockey sound clip that plays to get the crowd to make noise. That's literally all that that's known as here.
They are responding saying as if anyone pointing this out are making a mountain out of a molehill.
If people don't have any criticisms to make about the film's use of a paedophile's music (when he is profiting off it's inclusion), that's their choice, but I don't see any reasonable argument grounded in the idea that no one should care about this.