> Once upon a time, Firefox probably had a normal ratio of privacy-conscious users to privacy-indifferent users.

I'd bet a graph of their privacy-focused:indifferent users over time would be U-shaped. Very high before, oh, I dunno, FF2.0 when the only reason non-nerds had it was because their nerdy friend/relative installed it for them. Lower when they were advertising all over the place and marketshare was growing ('08-'12? My memory's hazy). Higher now, as their userbase continues a years-long contraction and shifts toward being mostly nerds, again.