1. No, they could just as easily package the info and allow the user to upload the logs to an error reporting system/website.

2. No, off by default or ask on first boot.

3. What data are they collecting that would be shareable to law enforcement? The feds need to know I’m on an outdated version?

I will not use or recommend Audacity anymore. It’s a shame, I really like Audacity and I’ve been using it since high school.