bonuswavepilot
Would I be correct in assuming that the majority of commenters here are from the US? (Not trying to throw shade on you Americans, just that you do tend to get needlessly flustered about swearing)
If the person you are criticising doesn't give any kind of shit, then your vitriol will make them feel bad and dislike you, but it isn't going to improve their code quality, because they still don't care. (And if they answer to you directly, they are likely less motivated to do well next time now that you have acted like a prick)
If the person is not able to discern the difference between good and bad code, then it is useful to them if you can explain what it is that you are mad about when reviewing the code, but again in this case, vitriol without understanding just makes you seem like an arsehole to work with.