[rustc]

Unless they're running ads for other companies without taking any money, they are indeed selling data:

https://blog.mozilla.org/en/products/firefox/update-on-terms...

> In order to make Firefox commercially viable, there are a number of places where we collect and share some data with our partners, including our optional ads on New Tab and providing sponsored suggestions in the search bar. We set all of this out in our Privacy Notice.

[plagiarist]

And that's what people are objecting to. The reason they need to clarify their terms "in accordance with California law" is because it is a good law, not because they have done nothing wrong.