Read his post again before commenting please. He said ranged PUGS and you talk about top progression guys.
My main is a Dragoon and while I still think he's decent (despite having to work a lot more just to be able to do decent-high damage), I've made a Blackmage for everything else but BC (CM / AK / farming / etc) just because it's a whole lot easier and I don't lose out on DPS. And if even most Blackmage complain about how easy yet effective bards are... that really says a lot.