I can not speak for the mechanics for retail, since I have not touched that garbage in years. I assume they are more complex. I do believe though that progression and raids would not gather threads like these mocking it if the information was not so readily available. The raids are still tough, specially if you do not know what mobs or npcs do. The first mobs in AQ would prolly wipe most raids if said raids actually had no clue what to expect from em.
Its just the audacity to mock it whats bothering. Also if retail is such a great version of wow with such sophisticated mechanics, id recommend playing that. The bleeding subs must be explained somehow though.