The canvas and footprint of one's browser is already possibly enough to identify machine and user.
I've never really remotely understood why all that crap --- especially browser make and version ( for which their were those jolly little switcher extensions in the olden days ) --- was even vaguely necessary to include in the Ur-Browsers when they started.
I don't really care much about this dispute, nor much of the privacy debate ---- takers should restrain themselves to what's needed at any time, whilst users should man up and expect that when they've submitted something or interacted, information is going to be kept and that they always have, and had, the choice to refrain from doing anything at all --- nor Gnome, KDE all the way !
However, the way this is going, instead of attacking the practices of the, mainly American, but also British and Russian etc. security services; and the spying and intrusions of the, mainly American, and British and EU etc. etc. dying Media ( anyone remember the thatcherite 'News of the World' phoning home ? ), injured people will just devolve into squabbling over the piddly crap instead from a devotion to their own self-importance.
I now demand all the information held here over my upvotes and downvotes since I joined.