The Empire's anti-democratic SDF proxies are not defeating the U.S Daesh proxies. They are simply replacing them.
One might reasonably ask how two seemingly opposed terrorist groups could possibly share the same strategic purpose. The answer would likely escape the awareness of the fighters as well, and it certainly escapes the awareness of most Canadians, whose tax dollars are supporting the terrorists. But the answer isn't that complicated.
Consider the similarities between the two groups:
Both groups seek to illegally "impose their will" on Syria, and are effectively destroying Syria, contrary to the wishes of the vast majority of Syrians
Both groups seek to partition Syria
Both groups require and receive support from the same aggressor nations
Both groups engage in activities that are illegal under international law and punishable according to Nuremburg Principles
ISIS/Daesh serves the military strategy of "place-setter", as outlined in an earlier article. Empire first infests an area with terrorists, then destroys the area, using the fake pretext of "going after terrorists", subsequently, it channels the original terrorists elsewhere, and then replaces the former terrorists with new terrorist occupiers who are portrayed as "liberators".