That's because DRG needed it badly. It was incredibly detrimental to their performance in FCoB. SMN can hold it's own in in FCoB but it's incredibly difficult to sustain your damage and MP.

I am a SMN main and I've cleared T10-13 with my static for a couple of months now. I understand the issues SMN is facing but it doesn't make things impossible. If you're playing optimally along with the rest of your party then you're not going to run into difficulties. My DPS is low in comparison to the rest of my group but I'm still managing to hold my own with an i125 weapon (and the occasional raise thrown out).

I don't agree with the dev silence on the matter but compared with everything else they have to do in game, a SMN job adjustment can wait until expansion when all jobs will be getting new abilities and adjustments too.