I understand your point, it would be more desirable for anyone who wants to clear anything to weed out the less experienced, but looking at the bigger picture it does no good for the game, a month or two after content is released you would hardly ever see parties without this clear requirement on.

If people are being somewhat forced to help out the less experienced (not carry, not all newbies are baddies) then so be it, it's better than a situation where people are more excluded than they are atm.