If you have an ad-blocker on then you're happily using all their content THAT THEY"RE PROVIDING AT COST, and blocking their way they make revenue.
I'm pretty sure that they don't give a crap about having less viewers if those viewers are using Ad-Blocker. That's like a Supermarket blocking people from stealing shit and people saying "Well, I won't be going there now then, They've got one less customer". They'll be quite happy that you're fucking off. That;s the whole plan.
More and more sites are going to block people with Ad-blockers so you better get used to less and less sites available. Otherwise, every site is just going to be :"pay for subscription" based. Would you really prefer that?