What you cannot do, for obvious reasons, is to entice people to click on ads. It doesn't matter how subtle the encouragement is, how good are your intentions, how many kids you still have to support, how many kittens you saved from certain death. It is against the rules that are both obvious if you think about them and spelled clearly in AdSense agreement and violating that agreement gets you banned from AdSense.
I'm also making money from AdSense and the simple reality is that if Google doesn't take steps to limit the kind of click fraud that this guy openly, if very verbosely, admits to, it'll hurt everyone else who's not matching it and in the long term will hurt everyone, period, because there will be less money in the ecosystem if ad publishers feel ripped off.