What a strange statement from the reporter. Why would the reporter asks this question to an Adblock Plus spokesperson? He declined to address because AdBlock is not related to Adblock Plus, so he can't possibly respond for them. Furthermore AdBlock has no "Acceptable Ads" setting last time I checked, so it makes no sense for AdBlock to play other developers to support "Acceptable Ads".
Good catch. That might just be a typo/mixup that occurred while writing the article. Either way, clarification and/or correction would be beneficial.
As per their blog, quoted below, ABP is indeed helping other small developers in integrating ABP acceptable Ads policy and paying some of their costs... And they are promoting Crystal app, as its incorporating ABP's Acceptable Ads policy. I wouldn't be surprised even Purify App incoperates this policy...