Having read the article I think it's a case of personal choice. There are a lot of gamers that are happy to plod along through a game at a slow pace and there are those that do everything they can to complete games in the quickest time possible. You also have to take into account individual players abilities, for example I do not consider myself as an expert gamer therefore I do not expect to get to level 20 for another couple of sessions yet. Another thing to take into account as stated in the article is the amount of available playing time people get due to different lifestyles. I think it's a good way to play the game as it encourages people to make the effort to talk to like minded gamers and for players to help others get through the game. Whilst trying to get members for this group I noticed a lot of people posting asking for high ability players to join their clan for the same reason, to get to raid level. If you take a look at the clan forums online I'm sure you won't have much trouble finding players to raid with. Please don't take offence this is after all only my opinion.