The review was written while the game was still in development.
The first part is already more than 10 years old, but there is no continuation or even any plausible rumors about it, which is understandable. Rockstar are very lazy guys, and as long as people continue to actively buy RDR 2 and GTA 5 from them, they will no longer release a single serious game. If they don't want to make GTA 6, then they definitely won't make the second part of the forgotten school bully simulator