Will Atlassian be harvesting code and content from private Bitbucket repositories? The wording in their policies and FAQ's is vague, so I'd like to get a definitive (Yes / No) answer.

I think I looked for this months ago, and my interpretation was that no, they were not doing AI training with it.. but with this announcement, I will be moving all my stuff to my own servers.

cloud repos are handy, but, having to constantly worry if some criminal comes "joinks, its my data now", is not worth it.

If it is vague, then that probably is a very clear answer to your question.