I think the bias is mostly due to whistleblowers talking about it and Quebec investigations into corruption being public. The spectacular aspect should also be taken into account as to which cases make the news; local township clerks accepting 50$ to fast track a renovation permit don't have the same impact.

p.s. If you read tfa, you would know that the court case came from federal courts and the trial was held in Quebec. No info is out yet on where the informant was from or alleged crimes perpetrated.