Still every Firefox user gets a never-expiring google cookie by default, a practice that is going on now for many years! Also cookies are accepted from everywhere and last forever by default without user consent, overriding the freedom of internet users in a brutal and privacy destroying way.
It is a great bigbrotheristic marketing lie by mozilla to obscure this anti-privacy behaviour with glorious blabla about how they respect privacy, when in fact they help the trackers to track you even better, doing so since many years.
Cookie privacy must be handled more restrictive by default, e.g. there is no reason to save any cookie after the browser has been closed if user did not explicitely set that for a site.
Hopefully some journous finally check the facts before mindless re-babbling of mozilla propaganda.