No, his post points to the fact that most people listen to the RADIO at certain times. IN his case, like mine, it's when we are driving. That happens to be a time when beats 1 is rap/hip-hop heavy....So, guess how we are going to interpret what Beats 1 is like?
Something other than interpreting it as being like that generally, rather than being like that when you happen to tune in at the same time each day?
It would be like someone tuning in to Dan Carter's rock show on Radio 1 each week, and complaining that they only ever played rock music on the station.