the difference being that people still NEED on an item even though they don't NEED it. they NEED on items that aren't actually upgrades just because they can.

why does a PUG deserve to roll on some item he will .not. use and just trash for seals when someone else in the group may in fact be leveling up a pug right now?

why should said pug have more rights to exchanging the unneeded (!) gear for seals than the rest of the group just because he can?

it does not check if people actually NEED it, it just checks if they have the same class as the item.

we should be adult enough to not be babysat for everything. SE doesn't want people to 'ninja' gear that they can't use (though they can ask if they are allowed to need if it's possible - in other games)
but at the same time they DON'T allow us to blacklist idiots or force us to keep quests in our tracker forever if we don't do them right away, won't do anything against dungeon leecher and all that junk...