Did heroic blues do this? If not, why would you expect T11 gear would do so? 359 will just become the new norm, with those raiding current content having much better gear.
Gear should be earned and a representation of ability. Having it should indicate that the player is both competent and dedicated. Heroics dungeons should not have been nerfed either and at the time were a representation that a person was ready to raid the initial cata tier. Now having 359 gear should be the indicator that a player is ready for firelands. By giving it away this distinction cannot be made.
Giving 359 gear to people who have not done the content, as it was intended, will enable poor players. These players, that never learned their class or bothered to study the fights, will invariably be a burden to the majority of the community. This could be fixed through developing content that teaches the players and reinforces these skills not nerfing the content. Not everyone deserves a cookie for playing.