“There exists an ethical framework—not the Copenhagen interpretation —to which some minority of the population adheres in which trying and failing to a correct a problem incurs retroactive blame for the existence of the problem but seeing it and just saying ‘sucks, but not my problem’ does not,“ is probably true, but not very relevant.
It's logical for Google to avoid involvement with porn, and to be seen doing so, because even though porn is popular involvement with it is nevertheless politically unpopular, and Google’s business interest is in not making itself more attractive as a political punching bag. The popularity of Copenhagen ethics (or their distorted cousins) don't really play into it, just self interest.