That not what is meant by the the term "Young Man's game"It already has been. The biggest names in hip hop are 30 plus. And that won't be changing for quite some time. Are there delusional people who will still claim hip hop is a young man's game? Of course. But every metric of popularity has shown it's not.
That term had everything to do with tenure. Jay z album only mattered to Jay z already large fanbase. The demographic that determines what is popular did not care about 4:44. Its evident in the streaming numbers.