dead on, accurate statement
they have done this on many expansions, with disreguard to what will happen in PVP until the game goes live and they goes into wait and see, hotfix, patch mode
in MOP BETA there where ample warnings/complaints about god-mode healers and hybrids healing ignored....and now we have undergone 5% healing nerf....then 15%, and latest 30% pvp healing nerf and it's still not noticeable
CATA BETA many warnings on rogues opening ambush/BS damage....ignored, went live but that was immediately hotfixed in less than 30 days
in WOTLK BETA...tons of warnings and complaints of ret-pals and DKs...ignored, took blizz 6-12 months to bring them down, yet still OP