Before the release of the LLMs where everyone could run it, the amount of slurping was probably manageable. Now that anyone can train an LLM and SO/SE/Reddit/etc are obvious places to go for training data, I can see where the systems would easily be overwhelmed. People contribute to SO/SE because it's a common place to go for community help. Training a for profit chatbot from the community data that wasn't provided to the chatbot by the community seems to break the spirit in which the contributions were made. I'm on the fence of the argument, but most definitely in the direction of not liking all of the model training for free.