I completely respect this persons idea of unsubscribing from feeds with advertisements. What is complete BS is calling feed ads spam. He even says "there is no way to opt-out." there is...duh...you unsubscribe. Believe me when I say this isn't about Google or AdBrite or whatever, I don't think feed ads are spam, and to call it such diminishes the evil that is -real- spam.
I do think that there is an interesting time coming where people overwrite/remove/replace ads from feeds. That'll be some interesting time. I am obviously not bothered by relevant advertising. I do think that there will be plenty of people who won't put up ads in thier feeds. I don't blog for money, that's for sure.
I have thought about putting up an adsense ad on my site, but its tricky as I work for Google and the question would become this: Would I be getting attention because I work for Google or because of my erudite comments? Maybe I'll put one up and donate the cash to the EFF or something and I'll leave the ethics questions as an exercise for the reader.