Actually, if you read to the bottom of the discussion [0] you'll see that it was fixed, and FF respects the Do Not Track setting.
In addition, they negotiated with google special terms for their analytics. This is the description [1] and this is the resulting options they got [2].
It is not fixed. You still cannot disable the tracking via an extension like umatrix.
And no, I do not set the 'do not track' thing. Because that is one more bit of data sent out. To every website. Not just to Mozilla.
Actually more then a computer 'bit' by the way. What percentage of users use the 'do not track' setting? Let's say 1%. Voila. Setting it is worth about 7 bits of data to identify you.
I don't mean to be rude, but if you're worried about the "do not track" setting identifying, you honestly shouldn't be on the internet. Or you should be using it like rms does [1] (scroll to "How I use the internet").
In addition, they negotiated with google special terms for their analytics. This is the description [1] and this is the resulting options they got [2].
[0] https://github.com/mozilla/addons-frontend/issues/2785#issue...
[1] https://bugzilla.mozilla.org/show_bug.cgi?id=697436#c14
[2] https://bug697436.bmoattachments.org/attachment.cgi?id=73207...