The reason there's such a pushback against them is because they've become popular. It used to be a secret amongst nerds; now it's common even on the iPhone.
I once saw stats from a 2015 study that said 40% of people on the internet used ad blockers. Who knows how that's changed since then, but as somebody else said, the majority of people who don't probably don't even know that you can block ads, otherwise they'd probably be using it.
My family prefers convenience and I cannot for the life of me make them realize the value of their privacy. They get lost if a button is placed at the top of the phone instead of the bottom. They complain when they click on an ad and the resulting page is a "cannot find the server" (because of it being blocked). To them, ad blocking is an inconvenience.
I guess it will just come down to which is more inconvenient, a web page that doesn't work every once in a while, or constantly being bombarded by ads which makes a web page hard to read.
The short of it is that Google wants to prevent ad blockers from working in Chromium based browsers.
I don't remember if this is also planned for v3 or unrelated, but there was also talks of essentially DRM-ing the internet to block non-Chromium browsers.