He is not talking about stats.

When you start a new game in Factorio, if you never played it, you can’t know how much of each resource you’ll have to extract and neither how much of an item you’ll need to produce.

I know it’s easy to forgot after thousands hours of playtime, but the game starts with your character having to manually mine coal one by one.

Not true, every item shows its raw materials right there in its menu. The rest is just arithmetic.

Also the LLM probably has seen dozens of factorio-related websites and setups.

And also, player (artificial or natural intelligence) don't need to setup everything upfront, it's actually the main gameplay feature is to run between production areas to expand/optimize them.

Technically every item displays requirements and crafting time, but most human players will just eyeball production rates until they start trying to build larger scale factories that you can't easily jerry-rig fixes onto.

Possibly there is a lack of item-throughput figures for belts and stuff though.

That information is certainly in the training data.