Why do most (j)rpg have npc encouraged pronlogist during the final battle.

[Yil]

Undertale, bravely second and some other games I cannot recall are exceptional, especially the fourth wall breaking in bravely second.
(In Kirby games, you just kill everything in sight)

 

[VinsCool]

I don't get it.

English please?

 

[Yil]

I don't get it.

English please?

So in many jrpgs before the final stage of the final boss, you are encouraged by some of your allies and your bound breaks free of the final boss's influence and give you a chance to fight it.
(Spoilers) In undertale ture Pacifist, all those monsters came to help you ended up being absorbed by the final boss, making everything even harder.
(Another Spoilers) In Bravely second they break the fourth wall and encouraged the player instead of pronologists, and the fight continues properly not because of plot but simply usage of standard mechanics.
Nice cat girl you have there.

 

[Sakitoshi]

Go play Tales of Vesperia, Yuri Lowell needs no encouragement to do what he needs to.
But in the typical jrpg the protagonist just feels he is a normal guy who can fight, that's why they doubt about being capable of such feats as taking down the baddest of the bads and his unlimited power.