Worth noting that the comment closing the issue mentions:

> You can disable Google Analytics in about:addons by setting your Do Not Track status to on.

> Again: this only affects users who visit the page with Tracking Protection on (which automatically enables DNT) or who manually set their DNT status to on.

but Firefox removed the DNT control last month (https://bugzilla.mozilla.org/show_bug.cgi?id=1928087), though it kept the Tracking Protection control and privacy.donottrackheader.enabled is still available in about:config.