As noted in the article, the feedback form says:
> Submitting this report will send the entire current conversation to Anthropic for future improvements to our models. Learn More
So I'm not sure why this is being posted to HN. This is nothing new, and nothing not known by anyone who has ever provided feedback.
Reading all the comments here, most of us didn’t knew and this is the right place to post this. I have not met a single person who have ready any privacy policies.