It's the Japanese Writers who created the episodes for every Pokemon Season like this one for example were some make sense while others don't.

Because Ash is the main character

Ash is the mc they have to milk pikachu for every drop its worth since its the mascot

@Gligorvic What Episodes have this where Ash saves the day when it makes no sense for him too?

@Drip goku kaioken 4 That i believe would be called Milking it. I think That's what happens with very popular Franchises. They use it as much as possible ending up greedy and Becoming worse While you waste other potential.

Charizard and pikachu are the biggest examples gengar and lucario and greninja are up there too