Because it's not true. It's like saying Bashar Al Assad ruled Syria with only Alawite support, we all know majority of his army was sunnis, Bashar was secular Arab nationalist but the opposition played the shia card. They claimed Bashar was sufiani but now are quiet about it since he has made it out alive.
I wish it was this simple... where the best quality and qualification of his rule was being the son of Hafez. But in a region where this is the norm and perhaps still the case I wouldn't fault him for that...
BUT, it isn't that... the state apparatus was purposefully, Alawite... key posts were manned by them... some near and dear ones of Assad himself.
The state after first world War was prepared as such... under French tutelage. Nusayris were empowered. The name itself with negative connotations, nusayri was replaced with Alawite. The strongest military faction, officer Corps were Alawite hence the coup by Hafez. The security forces, that included Sunnis were used to crack down on any form of overt religiosity, questioned for going to Masjid, especially so if that was a some recent change of heart.
I know that Greeks, Zionists or even Iranians wouldn't bother how anyone was living in their own state and why this was not the first uprising, in 1982, Hafez raised Hama to the ground in a wonton onslaught... where the number of deaths are mere estimates. Which is why this uprising had organic roots. Millions were displaced, and we may never know the the actual deaths. Now this, the Syrian uprising, was aided from outside... Syria became a playground for foreign powers, who on their part cared even less about Syrians themselves but who was in charge... the geopolitical ramifications are such... that when Herbert Samuel discussed the establishment of the Zionist state. His very first observation and wish was,
"I mentioned that two things would be essential—that the state should be neutralized, since it could not be large enough to defend itself, and that the free access of Christian pilgrims should be guaranteed. ... I also said it would be a great advantage if the remainder of Syria were annexed by France, as it would be far better for the state to have a European power as neighbour than the Turk."
Wrote the memorandum, The Future of Palestine, and became its first high commissioner.
Thus, Syria, the project was and is fundamental to the cause of Palestine itself. There is a lot more to chew over on that memorandum but that is not the purpose of this post.
Assad, could never secure Syrian air space from at will zionist attacks... that specifically targeted Iranian interests. While Iranians were helpless to do anything about those, the Russians didn't care... in fact we're informed of the impunity. So, in other words Russians were NOT interested in Syrian sovereignty, but seeking simply to keep Assad in power at the expense of both the Syrian people and any aid to the regime that was a threat in any way to zion!
A subjugated Syria, crippled and paraplegic for the sole purpose to advance zionist interests. So, you'd ask why didn't they invade back then and take more Syrian territory. Well, why didn't they?
Simply, the assuredness or the guarantee is gone!
Golan is strategic, and a path to central Israel. A cutout that provides limited space... full access of zion to three different states, Jordan, Syria and Lebanon but unless the resistance takes control of the whole is subject to international borders and politics within those... besides zion cannot fight a long asymmetric protracted war... it isn't Russia or The US. A unified, united Syria now is a threat that it was not... and I don't say that because of the current regime in charge... it is a position by default. The choices are limited...
I'll leave at that ...