I would like to say I've only run into one person like this, but no. I've lost count of how many of these people I've run into. I like to think I'm pretty good at understand other people's point of view, even if I don't agree with it. This is one I have a lot of trouble with.
I'm fine with relevant ads, but I think they should be relevant based on the context around them, not on the viewer. If I go to a website about trout fishing, show me ads that would be useful to a trout fisherman. There is no need to track anyone to do that.