Another thing is they currently don't have enough ad inventory to fill all the video views as is, so increasing the available monetizable views (by preventing ad blocker from working) doesn't do much good. As an advertiser I also don't care that much about ad blocker as that group of users tend to not click ads to begin with.
While the details on rev spilt for Red are still murky, I can tell you that all Red views are monetized, so to speak. On my channel only 45% of views are currently monetized.
So Red should decrease the available pool of views that can be monetized, which should in theory mean overall more views get monetized (by it by ads or Red). Plus ad bidding competition should go up as there's less views in the ad pool, meaning the CPM goes up.
On the YouTube Creators blog post they stated that "on a per-user basis, a paying YouTube Red member will generate more money for creators than a typical ad-viewing, free user". So lets look at the numbers. On my channel I get roughly $0.0016 per view (total revenue divided by total views) after YouTube takes their 45%. The tricky thing is that we still don't fully know how they're going to share Red revenue with us, but for arguments sake lets say they share 55% of the $10 evenly across all the views that that Red user had. In that scenario a Red user would have to watch 3,437 videos a month (114 per day) to get the revenue per view down to $0.0016. I'm pretty sure most people don't watch 114 videos per day, which means their revenue per view will be considerably higher than the non-Red user.
Personally I believe that they'll pay out on a Watch Time basis and not per view, especially with their latest push on the importance of Watch Time over Views. The biggest unknown is if every creator/monetized video gets thrown into a pool that splits the Red revenue per Watch Time or if it only goes to the videos that the Red users watched.
All in all I think Red is good for us. People tend to fear what they don't understand, which is why I believe there's all this hate for Red.