Should Blizzard have delayed Onyxia/Molten Core to Phase 2?

Let's be honest here. Molten Core and Onyxia is a mere few hours of content per week. That is roughly how long they will take to clear. I know that they were in the game at launch, but the reality is that nobody cleared them until months after. This was largely, because so many players were new to MMOs and to the game itself. Players took more time leveling, exploring, and immersing themselves in the world.It won't be the same this time. There is now this added pressure to rush to 60 in order to begin farming raid gear. I think that that mentality is hard to resist for some, but ultimately hurts the game. World of Warcraft was about more than just farming raid gear. I think more players feel the need to rush through the leveling process this time around. The argument against delaying the raid content, is that players would have less to do once they reach level 60. However, the raids only offer a few hours of content, and Phase 1 now encourages players to rush into them. Right now players are worrying they'll be a month behind on raid lockouts if they don't rush to 60.