Missiles - and speed - where nerfed a month ago in the QR expansion/patch itself.
Missiles are still viable, but they arent the "I win" button they were in mission builds anymore - well they are but with a little more thought and a target painter.
From what I understand missiles has their explosion radius lowered (this is what I figured out as since I rarely use them I dont really care) and as such its harder for bigger missiles to rape smaller ships ie frigs used to be easy kills for ravens in pve etc, now they need to work at it, or use drones
The threads are just the small minority whining about having to "adapt or die".