Of course you're upset, but don't expect much sympathy. Destiny got an overhaul that changed the way a lot of things work. The level cap and new leveling system is part of the DLC, which Borderlands 2 did. They raised the Nightfall level cap to reflect this. The Crucible had a preview, as was clearly stated, and ended when TTK dropped. Because of the increase in level cap, modes where the level advantages were enabled became locked to non-TTK players. Otherwise, there would be a huge disadvantage in IB and ToO. The new gear is also level specific, locking a large amount of it from your use. Everything that you are not able to access is mostly because of the new leveling system, which we were lucky came free with the last two DLC.