That's a dumb argument to make as all of those things are used to render the browsing experience. You can disagree with them being necessary or not, but they are part of the experience.

You'd be much better off arguing you wanted/consented to a browser, but you got 3 toolbars installed as well and a couple of extensions that report back every keystroke to their respective mothership.

A better example of a non-browser feature that crept into browsers would be PDF viewing.