That just means, by definition, that the prices YouTube are trying to charge are too high, doesn't it? What we're seeing is basically a negotiation tactic: you either reduce the price, or we'll keep using ad blockers.
Not to mention, most creators don't really live off YouTube ads, those pay too little for the vast majority of channels as far as I understand. Creators live off their own sponsorships, Patreon etc.
Note, I'm actually someone who thinks YouTube Premium is good value for my money and am already paying for it.