The first big paragraph in the article is right. Christian had a perfect opportunity to turn this into a PR SUCCESS and instead decided to attack the method of criticism and attempt to shift the blame of the tasteless ad onto someone else.
It's tacky and easy to see through. He could have ended the conversation there by offering to take a look at the video and instead decided to turn it into a meta-"you're being mean" discussion that so often happens on reddit where... sure enough... 30 minutes later, people are bickering about meta aspects of the discussion instead of the original issue.