I think advertising is one of the lowest, most pernicious forms of psychological manipulation out there. It simply cannot be done in good faith, by definition.
Some content creators even try to level with their audience about it and say "I'm just putting up this ad to get paid, just ignore it (or click it but don't buy anything) if you want." That's not dealing with the advertising company in good faith.
To me, the only good faith relationship between content creator and audience is the patronage model. This model has endured for centuries and some of our culture's very best artists have relied on it.
That aside, the crucial difference is still this:
TV ads cannot be removed. If they could be, they would be.
Since online ads can be removed, and since doing so provides an enhanced user experience, and since (passive or not) online advertising facilitates the gross pollution of the internet by financing endless numbers of splog, malware and other content-free junk sites, that nobody would ever pay for directly, why not block them?