Well, I can remember when the BRD lb used to be the healer LB, and thus was never used. I think that since they got a damage LB they're all still stuck in excited mode about it.
I don't really have an issue with it, except when it's a boss with a stupid amount of HP and a melee LB3 will knock 7-10% off of it, and the ranged LB3 will knock 1-3% off and they use it.
Or they use it on a single target when the boss has an add phase they could have used it on.