Seriously, MC needs to learn to shut the fuck up and not pointlessly antagonize people unless they are already enemies.
This could have ended with the arrogant asshole being punished and everyone going their merry way if MC didn't go out of his way to insult his family for literally no reason other than being a cocky prick.
And the worst part is that the story treats it as a good thing and not as proof that he is still too young and impulsive.