I am actually not against advertising in principle, or even tracking if that is what you want, but the current trend to pull in lots of resources (ads, tracking scripts, web fonts, CDN javascript libraries) from third parties scares me.
When you serve a page to a user, you are responsible (morally and legally) for what happens on the user's computer. Ad network serves up malicious code? Your fault. Tracker places cookie on user's machine even if your privacy policy says you won't? Your fault. New version of that CDN'ed Javascript library does something you don't expect? Your fault.
I wish more sites would arrange their own advertising like this guy, but I imagine it is a pain in the neck.
[edit] I wrote a post expanding on this idea: https://sheep.horse/2016/6/a_website_manifesto_-_introducing...