It's bad voice acting and also not having an actual person who fits that role playing it, which is why it sounds like trying to hard. I'm 22 and I don't speak that way. I'm not saying they should swear(I know that's not happening), but they are missing a lot of mannerisms and slight slang or accents for a young person. Right now you have someone imitating a script someone wrote of how they think a young player would talk.