All that shit that used to be cool ain’t cool anymore
The drive of human beings to constantly move forward causes stylish trends in dress, music, behavior, etc. to fade, resurface, fade again, and die.
All that shit that he perceived as cool when he was younger: the fame, the paparazzi and shit, isn’t cool anymore.
It’s also worth noting how at the beginning of the verse he tells of in his youth he was idolising LL Cool J, who was at the peak of his popularity or “coolness”. The level of popularity Cool had back in the day isn’t his anymore, basically saying he isn’t he centre of attention like he used to be. It just shows times changing
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