With other games bumping up level caps, its necessary to advance. You wouldn't be using the same kind of weaponry in this game without the Etheric light system anyway. It wouldn't be as effective. I think its fine. Progression is progression, even though people don't want to let go of their old favorites, as if its even necessary. You can use old 300 attack gear all you want, but in end game content, only the best gear should flourish. Leave the old gear to adds and lower level strikes in my opinion. But again, its my opinion, and apparently Bungie feels similarly. No two ways about it. Adapt if you wish.