Also with Falinx and Liligant-H being banned, I think it's a bit fairer to ban the moves that make them overpowered instead of the pokemon themselves, because then they are a lot more balanced.
Smogon tiering policy dictates that problematic mons who are the only user of moves/abilities get banned, even when that is the element breaks them. For instance, no one argues that banning Wicked Blow would make Urshifu balanced in OU. You just ban Urshifu. Otherwise, it’s a complex ban.