About 30 seconds into reading the article, I came to roughly the same conclusions as you. No references to primary research. Poor.
The sad thing is that many people accept what they read in blog posts that are widely retweeted. Critical thinking is such an important skill, I'm surprised how many people don't have it. ( http://en.wikipedia.org/wiki/Critical_thinking )
What you are asking for is for the research to tell you how to think and to validate the idea for you. That's somebody else's work, not yours. So you are wanting them to think for you, instead of thinking about the idea on your own. That's not critical thinking.
Critical thinking involves using your own mind to think about an idea without research. Not many people can do this.
Ideas are presented all the time. You either agree or disagree. If you are curious for evidence, then you do the research yourself. But don't agree or disagree on the basis that no research is presented, or on the basis that lots of research is presented. Either way is not critical thinking.
The sad thing is that many people accept what they read in blog posts that are widely retweeted. Critical thinking is such an important skill, I'm surprised how many people don't have it. ( http://en.wikipedia.org/wiki/Critical_thinking )