Didn't P4k just give that Iceage album an > 8 score? The one that hasn't even sold 4 thousand copies?
Meh. They're not as important as they want you to believe.
There are a few tales of albums and bands either doing considerably well after a BNM or significantly worse after getting panned. It's on their wiki page somewhere.
It's hard to deny their audience size and the effect that a BNM designation has on a record that's accessible to a degree for the casual member of their audience. Pop records like that Autre Ne Veut record definitely get a much bigger boost than an album like Iceage.