What you’re describing is not exactly gaming, but a different hobby entirely which is sometimes referred to as benchmarking. I’ve dabbled in it myself for some games, and the goal isn’t to experience and talk about the game as it is, but to figure out how to benchmark, best settings for performance and all that jazz.

Discussions about specific games for their merits are still very much alive on the internet though, you usually have to go to reddit and look for a dedicated subreddit for the game you’re interested in or their itch/discord if it’s a small indie game.