@KeyJ @NewtonMark It's a balance-of-probabilities thing as to whether internal company traffic traversing a third-party service might ever be subject to a security breach. Companies like Slack sell their services on being secure and private. They don't want a breach; their customers don't want a breach.
This LLM thing is quite different. For a start, it is quite deliberate. Secondly LLM training is explicitly mentioned in the policy. We're not forbidden to use them, but sending confidential data to them requires approval. That's the sort of conversation that will be happening now.