Existence of the Free Syrian Army

According to this thought provoking article, the Free Syrian Army that is so popular among the media does not even exist. It is just a brand-name for a bunch of Syrian Rebel groups. The Syrian opposition is just like the term "Christianity". Like Christianity, which has thousands of sects, the Syrian Rebel groups have thousands of factions. Also like Christianity which has hundreds of churches that call themselves Protestants (like Western Protestant Church and Jesus' True Protestant Church), even thorough all those Protestant have nothing to do with each-over except that they share the same name. Syrian Rebel Groups are the same way, with dozens of factions that call themselves "Free Syrian Army" even-though they have no connections (and some of the "Free Syrian Army" factions might be fighting other "Free Syrian Army" factions) with each-over. Also, "Moderate Syrian Rebels" is an oxymoron, since most of the rebels are actually part of diehard jihadist factions such as al-Nursa and most famously the Islamic State. Currently, most of the "moderate" factions all but defected to hardcore radical groups like the ones mentioned above. In fact I have read few articles that said that  "moderate" rebels actually sold Steven Stoloff to the Islamic State. So maybe arming the "Free Syrian Army" like Obama wants is not a good idea after all....