Ask HN: iOS 9 is out with its ad-blocker support. How do you feel about that?

I find it weird that an app like Crystal doesn't have whitelist support. I still am not comfortable giving someone money for an ad-blocker app either. I got Crystal while it was free, though - but it's annoying that something as basic - and minimally ethical? - as a whitelist was not included at launch. I'd hoped to install an ad-blocker on my mom's iPad 3G, but apparently ad-blockers aren't supported by it for some reason. Ad-blocking feels a lot like the piracy discussion. I like to think of it in terms of "honest downloading" vs "dishonest downloading". Sometimes, people just come up with excuses posing as arguments to cover for their laziness and selfishness - but there are also perfectly valid arguments to be made. But those arguments may not have anything to do with some people's actual motivation. Thoughts? Experiences? Practical as well as ethical. I have a pretty good idea of how the general opinion will sway, but it'd be interesting to see some people think out loud about it - especially when they don't have an ... unfortunate ... conflict of interest like a Marco Arment. Will you be installing ad-blockers on your folks' devices, when you visit them for Thanksgiving? Why?