Probably so, still you're not a retard simply because you work developing Wordpress or Joomla sites. The condescendent and aggressive tone of the reply makes me read nothing but "boo-hoo" from the typical hater that finds joys in arguing over everything. Instead of focusing in the learning experiences and interesting facts of the blog post, starting with a "yawn" doesn't make very constructive does it?
True, people developing Joomla sites are not the retards, their customers are.
Just kidding. And I agree with you.
The tone is admittedly aggressive, but his feet are way more in the ground than those of the authors of the article. What those guys are doing is essentially illegal.