The reality is that they've given up on all other companies, so people are very sensitive to losing their one remaining chance of privacy, especially if that's the only reason they're using Firefox to begin with.

> Mozilla is the only company who cares about privacy actually, so I feel people shouldn't go completely nuts every time they spot something small in an experimental version.

But, small question: isn't the Nightly an experimental version?

Yeah, and I would assume Nightly users would be more savvy about opting out in preferences if that's their wish.

That doesn't make it okay for an opt-out privacy invading study to suddenly be included. You shouldn't silently get less privacy protections simply because you updated.

You're right, Nightly users probably are more savvy so there's no need to decide for them. Lay out what the user's options are and force them to make a choice when the browser starts, don't have a default, and don't have an option preselected.

All this crap has to do with what's okay to do in the absence of clear user intent. If you remove the possibility you don't have to worry.