>>41324742And dark is one the least resisted types in the game, and knocks off clutch items, so again... Why would you bother carrying Power Whip for these niche opposing Water/Grounds, when you can generally cripple 90% of the Pokemon you encounter with a Knock Off or Toxic or setup rocks?
Meanwhile Grass is resisted by 5 types in the game, and barely even covers the more popular waters in the current metagame. (Of note, most you'd be better off crippling with a toxic anyways since that inevitably means they're as good as dead)
Water/Ground/Dark is basically unresisted in the metagame. Only the following pokes resist those 3 types, and most are gone due to dexcut or are shitters that won't see play anyways.
Nuzleaf
Shiftry
Breloom
Cacturne
Cottonee
Whimsicott
Virizion
Chesnaught
Morelull
Shiinotic
Tapu Bulu
Scald/EQ/Toxic/Rocks until Home opens up, then it's Scald/EQ, pick 2: KnockOff/Toxic/Rocks