I couldnt disagree with this more. There are fewer tanks and healers because most people dont want the responsibility of dealing with a critical role. You HAVE to pay attention as a tank or healer, and in the past you could sleep through being DPS. This is no longer the case as due to mechanics you at least have to pay passing attention to your surroundings, interrupts, CC, acheter wow po and buffs/debuffs to be successful as DPS. Eventually the poor dps will realize this and either step up or quit. Once they realize that they are just as much responsible for a groups success as the tank/healer I think you will find a much more even matchup in queue times.