It matters a lot because it's a real solution for external bots that plays more "fairly" especially in older games. It also allows to test games autonomously, which is huge if we are talking about automated programming.
Imagine if you can bring those AI players to CS 1.6.
LLMs are the wrong tool for video games. There have been plenty of successful non-LLM AIs that have been trained with reinforcement learning to play games.
If you want to implement actual bots inside the game, then you want to use explicit logic instead of inferred logic. It's much more efficient and easier to debug.
Imagine if you can bring those AI players to CS 1.6.