You have higher expectations than trying to preserve privacy during ad measurements? By... not doing that?

It's not like Firefox comes with "block all ads fully" out of the box. And unless you are extremely new to the internet as a whole, this should be neither surprising, nor up for discussion. That's not the scope of a company like Mozilla. Probably not even of one like Google, tbh.

And in the context of not blocking ads, anonymizing measurements is the next logical step, no?