The lead is a metaphor for how training an AI uses a shit-ton of energy, and if its a Corp training it the water used to cool the GPUs is often dumped straight into a local river, which does bad things to the stuff living in the river.
It could also be referring to how the training data is usually scraped from all across the internet, but I think this person is specifically concerned with the environmental cost.
The lead is a metaphor for how training an AI uses a shit-ton of energy, and if its a Corp training it the water used to cool the GPUs is often dumped straight into a local river, which does bad things to the stuff living in the river.
It could also be referring to how the training data is usually scraped from all across the internet, but I think this person is specifically concerned with the environmental cost.