So much of adblocker usage is because ads are ugly, intrusive, creepy (or conversely, pointless), and great vectors for malware, and thus, are bad UX. I'm very much hoping that increased prevalence of adblocking will make the content industry either come up with a way to serve ads without wrecking UX, or monetize differently.
The problem with ads and ad blockers is that if a significantly large percentage of sites have bad ads, people will install and use ad blockers. Ad blockers will by default block ads on the well behaved sites as well as the bad sites, effectively punishing the good and bad alike. I believe there is a term for this -- the market for lemons.
An acceptable ads standard, in other words.
The problem is media businesses dealing in mass market dreck struggle to monetize those ways and instead rely on giant intrusive ad networks paying penny CPMs - but I think that's what "For better ads tomorrow, block ads today" is getting at :-)