You must be looking at a different article. The title even says it, very boldly. Left = decline. Can’t get much more click bait polarized than that.

 Look at the quoted wording used:

• likely
• Indications
• May contribute

This is an over dramatization of a coincidental blip found in looking at statistical data. A very far cry from anything remotely factual or definitive. 

Just fairy talk that someone decided to try and use as a political tool. 

Critical thinking isn’t involved past the study itself.