> Generative AI for source code learns from developers - who mostly publish their source with licenses that allow this.

I always believed GPL allowed LLM training, but only if the counterparty fulfills its conditions: attribution (even if not for every output, at least as part of the training set) and virality (the resulting weights and inference/training code should be released freely under GPL, or maybe even the outputs). I have not seen any AI company take any steps to fulfill these conditions to legally use my work.

The profiteering alone would be a sufficient harm, but it's the replacement rhetoric that adds insult to injury.