>>542227643
Because that's too easy.
If he was so easily convinced he'd have doubts when Asuna and Simmons switched side to protect the Digimon.
I liked how the same trope played out on Metaphor, having a Papyrus party member didn't just magically make him forgive what they did to his son, he just went "you're one of the good ones" at the end of the game.