D/D/D are not meta. They are just competitive & kog worthy. They REALLY struggle in battles vs older decks (e.x. shiranui) and they are just big beaters. Meta deck used to change the whole way of playing the game. Darklords, invoker, shiranui were meta because they forced everyone to use skill like sealed tombs, lancia etc and cards just to counter them. D/d/d atm are counterable by everything.
D/D/D is struggling because they are even more reliant on continuous backrow plays.
Aromage is kinda like that too, but they can afford to have only one "Winds" on the field, plus they have a good field spell to fall back on. D/D/D doesn't have that, and must make use of all their backrow.