> Mozilla doesn’t sell data about you (in the way that most people think about “selling data”)
> (CCPA) defines “sale” as the [...] in exchange for “monetary” or “other valuable consideration.”
> Whenever we share data with our partners, we put a lot of work into making sure that the data that we share is stripped of potentially identifying information, or shared only in the aggregate, or is put through our privacy preserving technologies
So... they are "sharing data with partners" + "in exchange for “monetary” or “other valuable consideration.”". Sounds like "selling data" to me, and I am not sure who are those "most people" who would think otherwise.
(the fact that the data is stripped from PII is nice, but does not really change much, it's still selling my data)