I personally think light requirements don't mean anything. It just means I played things that gave experience and infused gear to that level. Banner gives me Pinnacle drops so that increases level also. Artifacts help that too but the original post I made was for certain quests (not all) that I have issues finding groups for like darkness in the light quest, or the reprise strike for the independent study quest.... Modified strikes stuff like that. It's tied to a quest but it has matchmaking elsewhere