This is a funny case where Mozilla thought they are clarifying their position by pointing out how ridiculously CA defines "sales" only for it to blow up in their face. This is not the first time it happens to companies where in an act of desperation they issue some "apology" or explanation only to make the whole thing worse.
Now people will read even more carefully their privacy policy https://www.mozilla.org/en-US/privacy/firefox/#notice and may find things like:
> Firefox also shows its own search suggestions based on information stored on your local device (including recent search terms, open tabs, and previously visited URLs). These suggestions may include sponsored suggestions from Mozilla’s partners [...] or relevant URLs that are popular in your country.
> Mozilla processes [...] how many searches you perform, how many sponsored suggestions you see and whether you interact with them.
> Mozilla collects technical and interaction data, such as the position, size, views and clicks on New Tab content or ads, to understand how people are interacting with our content [...] This data may be shared with our advertising partners on a de-identified or aggregated basis.
> we share data across Mozilla-controlled affiliates and subsidiaries. We [...] disclose personal data as part of a corporate transaction, such as a merger, acquisition, sale of assets or similar transaction
> [...] retain personal data for more than 25 months, but actual retention periods may vary depending on the type of data and the purpose(s) for which it was collected
[Definitions]
> Technical data : Device type, operating system, IP address, ISP
> Settings: Enhanced Tracking Protection settings, cookie settings, permissions (location, camera, microphone), toolbar customization.
> Location : Country code, city.
> Precise Location: Your precise location (within a few feet or meters).
> Interaction data : How many tabs you have open or what you’ve clicked on. Click counts, impression data, attribution data, how many searches performed, time on page, ad and sponsored tile clicks.
> Browsing data: [...] websites and URLs you’ve visited. [...] (travel, shopping, social media), top level domains (example.com) or specific web pages visited.