You have diversity. You either choose bewd, harpie neos engine or pure harpies.
3 different decks to choose.
What more do you need?
Dont be overdemanding.
A Meta isn't always anti-diverse. The real issue is that Duel Links (and Yu-Gi-Oh as whole) is poorly balanced. Even when the banlist fixes one issue, Konami eventually brings out a broken skill or box/minibox and new problems arrive.
Konami refuses to follow the golden game developer rule:
weakest playable option having at least 35% chance to win against most recent-strongest tier 0 for 2 years in a row without modifying its initial state from 2 years ago
The moment you knew the number is <35% you should have quit.
You keep playing in spite of that?
It's your fault
I am quitting DL, see ya again in Master Duel. I just want a full TCG experience. If they add cheats a.k.a. fcking cheating skills like Destiny Draw in that new game I will just uninstall immediately.