You can do 20+ attempts a week in M+ for your weapon, stack people to get specific loot because personal loot is still a thing. 4 raid difficulties? only 2 of them give decent loot. Sure RNG is RNG, but rng is heavily in favor for M+, time becomes the problem. Don’t have friends to run M+? Don’t worry you need a full 20m+ guild to run mythic… xd
Anyway arguing about difficulties, that would be like arguing that M+ has 20+ difficulties, nobody care about the loot you drop in a +2 moreover with the new upgrade system.