That's not a question, it's a textbook example of the complex question fallacy, which is dishonest rhetorical trickery. Also useful if you just want to insult someone but pretend you're asking a question. If a person was just interested in the guys relationship with his brother, they'd ask "how come your relationship with your brother is so trash?", without the loaded accusation at the end.
It's the same category as "so, have you stopped beating your wife yet?"
It's the same category as "so, have you stopped beating your wife yet?"