Funk Master Flex made the critical mistake that a lot of Black people make in business, and that is becoming emotional. Under no circumstances was it or is it ever okay to publicize your private business conversation before you and the individual you are doing business with have collectively resolved your business matter and or subsequent business transaction. Whether Funk Flex understood that HOV was reaching out to him for business or personal matters is a nonissue. He may now have ruined a good business opportunity which could have benefitted both individuals, or at the least found out some vital information that could have aided in his further success.
As comical as the radio rant may have been, it did not add any substantial nominal gains for his brand and it probably strained a good working and beneficial business relationship. It was simply immature and exhibited poor business etiquette and lack of savvy.
It was corny.