>>42559974It's true that Foul Play isn't a relevant move in OU, even on the mons that can use it, but Strength Sap is Galarian Corsola's main move, and Galarian Corsola is a pretty common Pokémon. As for confusion, the damage dealt really is less important than losing your turn, but there's still Pelippers here and here that can cause that.
Of course those are extremely situational but if you want to put some effort into IV optimization then it might be harder and more useful to actually find Pokémon with a 0 Atk IV, then upping the other stats with bottle caps.
