Forget about Samurott not getting shell smash, why doesn't he get earthquake?

>Literally, a pine cone, a turtle, a floating plate, a piece of coral, and two hands with faces on a rock can cause an earthquake, but a giant samurai otter can't?

(Pineco, Torkoal, Bronzor, Corsola, and Binacle)

Also, why does Swalot get earthquake, but not Muk?

Also, why do Togekiss, Slowbro, Gloom and Mr. Mine get drain punch, but not Machamp?

List other moves with bad distribution in this thread.