If you do ask for a few dollars a month you have to provide a ton of perceived value. That's despite the fact that they would spend it on snacks without hesitation.
As patience of creators and curators begin to run more thin, today's information society will split into tiers of those who pay and get good information vs those who demand free and will splash around in the filth of the free information sewers. The filth being ads, spyware, malware, low quality content, spiritually harmful content, government propaganda and worse.
But at the end of the day the I am sure that for a large portion of people complaining they spent the majority of their video watching time watching YouTube. If it's not worth it to you to pay the equivalent of a big mac meal month to get rid of ads that's fine but don't act all morally superior to those that do.