Sadly, "using the bathroom" will cause a more immediate visceral reaction for most people than "maliciously manipulating your entire life via ad networks and media".
Do we really care what it is that will cause the visceral reaction? If I said it might reveal ways/means or private IP or any of a million other examples, few would really care as not everyone is involved in that. However, everyone goes to the bathroom.
I care a little bit - I think it's genuinely disappointing that your privacy can be so thoroughly compromised by interesting uses of metadata... but I also won't let the perfect be the enemy of the good. It'd be great is people truly understood the dangerous of invasive monitoring outside their physical forms (a, imo, relatively minor privacy to have compromised compared to your behavior) - but if it gets folks riled up I'm all for it.