Maybe you are excited about GTA6 and maybe you aren't, but it will likely be a cultural monument in at least the following way: there will probably never be a cultural artifact of this size and scale made without genAI slop in it again
EDIT: If you are looking for proof of that, Rockstar themselves made statements that they would not use genAI in GTA6
https://www.msn.com/en-us/news/other/gta-6-is-micro-transaction-and-generative-ai-free-says-rockstar/ar-AA2bipRG
https://gamerant.com/gta-6-generative-ai-use/