Because Game was kicked out of G-Unit in 2005 it's 17 years later and he started off a verse mentioning Banks and Buck.
It's the equivalent of 50 Cent starting off a verse dissing Ja Rule or Supreme.
The Game is just like 50 in that regard. Constantly putting himself into the middle of shit jabbing at other peoples careers just to promote themselves.
The Game still does it through music now 50 does it through social media.

