Yep there is usage reporting (which features people use), but it never includes the sites or domains you visit. Beyond the project being open-source, it's also

Yep there is usage reporting (which features people use), but it never includes the sites or domains you visit. Beyond the project being open-source, it's also bundled so the production code is a readable as possible for you to verify this. Honestly the extension would not exist in its current form without this. Looking at the usage after releasing a feature is incredibly helpful to see if something is working.