He is not unknown, but the Super Bowl appeals to EVERYONE in the US. Too many people don't know he exists which is why they are confused he was chosen over more established acts.
Any journalism that has opinions in its core is a joke.
Yes. Although, in all fairness, all journalism involves some sort of opinion (for example, even in choosing to write about a topic the author expresses the opinion that said topic is important).
King Bruno Mars is having everybody in the US watching his performing ASS rocking Super Bowl while this Times journalist is pressed because his favorite band isn't!