I may not like where tanking is at right now, but it's not because tanking is more accessible. It needs to be more accessible, because it has been an under-subscribed role. If (at least some) DPS-ing jobs are accessible, why should tanking and healing not be on the same level? We already have tiered content for providing more skilful players with a challenge, so I don't think it really helps the game to put a higher skill premium on some roles over others.