[noja]

So if I opt-out, it (basically) sends my ip address to lots of trackers?

Why? That sounds illegal.

Why doesn't it simply not load the trackers?

[hutzlibu]

Ooops, erm, technical reasons I guess.

Well, it could have been really easier to implement the opt out it later by this design, but it is more likely, that the dataflow is intended.