Essentially from what I can tell, Simon didn't like the fact that they couldn't just roll through everything with no forethought or strategy and so he then bashes the dungeon(s). ANet said the 5 man dungeons were the hardest content in the game for a reason. I've seen other groups do just fine against The Lovers, so it's not the game, it's the player/group and they're simply not putting any thought into what they have to do nor what build they bring to the table in order to accomplish the task at hand.
Agreed, they didn't have a clue what they where doing, Lewis started to get the right idea by using boulders alot but he didn't do it properly, not thinking about it at all.
The 5man dungeons are meant to be hard that's the entire point, this isn't WoW heroic face roll.
People like Simon and Lewis (the majority of the player base) should not stand a chance in the dungeons unless they become better players and plan ahead.