Remember the early days of this conflict, 2011-2013. Before ISIS emerged, before they took Deir-Al-Zour. The story was pushed that the entire SAA is Alawite and people began believing this, it grew and the majority of Syrians turned against the regime.
Those days are gone, that 'revolution' has been trashed, hijacked and ruined in every possible way. If you ask Syrians now the either don't care, or they want the war to end with the current situation meaning the SAA maintaining its control. The story that foreigners are running the military show is a story of the past, even the Iraqi component in Syria decreased massively after 2014 and hasn't grown since.
Saying SAA are all Alawi is BS, those who did definitely wanted to make a sectarian point. BUT the overwhelming Majority of "Commanding" positions were Shia( including their different sects, be it mainstream shia...Alawi etc..)
So, in a way, the view was "justifiable"...
Nowadays, The Sunni "fighters" are a minority, most of them died, and those left are "Ex-rebels from Daraa,Ghouta etc..."
What happened in the last decade, was also a demographic shift of the Syrian pop... Where displaced/targeted areas WERE Sunni ones... that after "Deportation" (ie green buses), the pop was replaced by Shias.
Right now, Sunni numbers are very low under ASSad held territories, Despite Sunnis making 60-70% of the pop in 2011.
Look you can't deny the fact that after ASSad failure btw 2011-2012, foreign Forces took roots... Like Iran, till 2015-16 When RU came along... To this Day... You know.. that ASSad is a puppet... Whatever RU/IR say, He obeys...
Take per exemple the Tiger Forces... The main "Pro" entity in the ASSad army... Who is in Control of them? The Russians... They literally rebuild that Unit and in control... If I have to give an opposite analogy, They are the Equal of TFSA.
Then you have the Shia "Militia"... Zainabiyoun and co... that are commanded by Iran and used as 2nd lines...
Then you've got HezbShaytan... Who are playing on both sides... to keep their Lebanese-Syria-Iranian balance.
And Finally, The famously known "Canon Fodder"... Those Syrians under ASSad control... that are walking "farmers"... used to be sent first to open the frontline... and let the "Pros" get in...
My take is Arab regimes are sellouts... who will give their countries to whoever wish to take it as long he got the promise to stay on the throne... That is for me a NO... better them dead.
Second, those who kill his pop for his throne is de facto an enemy...
Last... I don't care about X or Y ethnicity if such Ideology doesn't bring/make us Stronger/better.
Maybe with TR actions, other Arab regime gonna open their eyes and do something, or be overthrown by their own people and "let's hope" things get better.