More hypocritical than that is that I know many such people who then go to create their apps and as soon as they have enough traffic, they'll add adsense to their apps but keep blocking it in others. There's also the argument that you block ads due to privacy, again here I'd say, don't use those websites. If you know there's a security camera at the bank branch and you don't want to be recorded, you don't go to the bank branch, no normal person would think to put a hood on their head to still go.
I bet this is going to get downvoted to shit, because I've been in HN for a few years and it's predictable where the crowd goes, but it seems very odd to me how we so easily deny other developers of creating free to use tools just because we think we have some moral higher ground.