Earlier quoted context omitted.
Yeah how is opt out of data collection not an option? This is what they mean by don't be evil and Google is proving yet again that they truly are
Usage statistics includes "your prompts and answers", see the last paragraph in the ToS. I have no idea why legal insists we write "statistics" rather than "data".
that's a read flag. That's a weasel word in my opinion. If we took Google to court, you can easily say "statistics" does not include user's code.