those mechanics actually hurt when people weren't geared for it. We are at the point in the raid tiers release where people have a few pieces of titanforge / 905 pvp gear / getting some of the better legendary's so people are starting to outgear the heroic content, not to mention the giant dps and some survivability upgrades everyone got with the new talents, you can ignore quite a bit of heroic mechanics at this point if you're geared and can push bosses phases.
you an solo Aluriel as well, with the Monk legendary hat and using stagger pause and purifies effectively.