You're correct. Whether this ends up being more distinctive or demarcative depends on how widely deployed it is. A few hundred and it's not very helpful, but if you have tens of millions of browsers reporting only "LOLCAT BROWSER" (or for old sk00l credit, "AOL") it may give data miners some headaches.

It's kind of like Tor (or if I remember right, anonymizer.com) in those respects - until you have scale, it probably gets associated with shenanigans; once you hit the tipping point, it operates as desired/intended.

But hell, I don't mind marking myself as a type of person who doesn't want intrusive ads. (Why yes, I do run adblock!)