"Don't write the embarrassing parts down" is probably SOP for these sorts of things.

But honestly, even from a non-nefarious motives perspective, that's one of the things that Slack and similar logged-forever-use-us-as-your-knowledge-base conversation tools scare me on. The risk of someone saying something that could be taken wrongly by a journalist or a court one day even if not meant that way goes up the more conversations you record between the more people.