Stephen Gowans refers to 2015 ORB International poll. ORB is a research firm that works with US and British governments. This poll shows that President Assad and Iran have a majority support as a positive influence in Syria. Another ORB poll, May 2014, found that the sum of support for the opposition forces, 31%, was less than the total support for Assad and his government showing Assad best represented their interests and aspirations.
The Western Powers cannot allow for Assad to be seen as a credible and legitimate leader. So, the mainstream (and much of the "progressive") media ignore the polls that contradict their attacks against Assad.
Gowans clearly points to the reality: The US foreign policy with respect to the Mid-East must foster divisions and disunity. The last thing they want is a coalescence of some single powerful Arab Union that is strong enough to take control of its resources and markets and destiny.
Suppose a respectable opinion poll found that Bashar al-Assad has more support than the Western-backed opposition. Would that not be major news?