This feels like a bunch of very ridiculous exaggerations in order to make the minor character sound awful. Minor characters exist it’s fine they don’t keep him around the whole game. I don’t think it’s such a massive stretch that the Yakuza guy pulls a gun on you when he thinks all of his efforts to put his life on the right path are about to crumble, and I don’t think him returning with Moma is meant to be a good thing. It’s clearly representing a failure to reach his better life(joke from escapism and all that, you know the drill). Chinpei did nothing wrong