Audacity is not spyware
Muse Group ha absolutely denied that the data is shared or sold with third parties. In any case, their number is rather small. In addition to the CPU type and the version of the operating system, theIP address, but after 24 hours it becomes unrecoverable. Information relating to errors is collected only with the consent of the users.
The IP address, which becomes unreadable after 24 hours, only serves to offer two new features that will be introduced in the next one version 3.0.3 of the software, or the automatic updates and the error reporting (but only with the consent of the users). Audacity 3.0.2 it does not collect any data, so you might as well avoid installing the update.
Muse Group has not however clarified why the use of the software is forbidden to children under 13. The General Public License does not include this restriction.