And if I choose to drink a Coke, then so be it. I'm not forced to, and I'm aware of the fact that I am consenting to whatever ill effects I might get by purchasing and consuming it.
These pixels are a horse of a different color. They grab my info with no consent given (hiding behind "But the site we have the pixel on has to inform you, not us!" is a complete and utter cop out) and then make a profit selling or using it.
Totally different circumstances, and this shouldn't be ok.