The unscrupulous advertising practices out there (e.g. straight-up malware deliver) make it too dangerous to not run ad-blockers. Until the security issues around advertising are addressed adequately, I consider blocking entirely ethical. Compare it to the idea of Target shaming users for not trusting them with their credit card info.
Besides, I expect direct patronage models to supplant advertising for smaller sites sooner rather than later. And yes, I already use Patreon.
I can't think of any reading off the top of my head, but Patreon and other services usually work this way: many creators provide their primary work (the web comic, the podcast, etc.) for free, regardless of backing. Backers typically get extras. For example: I received a digital sketch of my choice for backing a comic artist.
Look-up Patreon.com. It works by people opting to either donate money for a specific project, a certain amount of money a month, or a certain amount of money per article/comic/video etc.
There are no paywalls, it is like a wealthy patron paying for a public concert.
Besides, I expect direct patronage models to supplant advertising for smaller sites sooner rather than later. And yes, I already use Patreon.