>>55542498>4-move limit is sort off implied, barring very rare exceptions like Orange Islands Drake's Dragonite.The only reason to keep it around is for a flimsy excuse to make it easier to animators, but that doesn't hold given how off-the-script they get with how the moves work and are animated. JN didn't even care about the limit and just turned any move into whatever they wanted. They wanted Pikachu to use Volt Tackle, but he doesn't have it slotted in? Who cares, he uses it anyways.
Good stories don't use the 4 move limit.