Regarding the FSA rebels, I would say Mixed Bag but outside of Syria Bringe leaning cringe (WALL OF TEXT INCOMING)
Some of you are really not TOO bad but a bit too conservative and anti-socialist, and may end up getting in the way of women's rights, lgbt+ rights and other social issues and often have trouble forming a genuinely secular nation that can ensure the equality of those of all faiths and cultures including indigenous and tribal communities.
That being said I do support some of you in means of overthrowing even more oppressive systems of government at least in theory. But in practice those who follow you often are at best a mixed bag. Examples of Islamic democracy in opposition to authoritarianism such as the FSA were not by any means a great alternative by any means, and were fairly nationalistic (and not in the good or progressive way), and did little to genuinely fight for true freedom, and while I feel many who were apart of the opposition genuinely wanted a freer nation, many eventually aligned with religious fanatics, or outside forces who didn't care for any genuine change, and many were full on terrorists who committed numerous awful crimes for the sake of "revolution". Though I am not one to praise a tyrannical asshat like Assad, especially with his authoritarian anti-democratic praxis, and even openly killing civilians when it suits him, I am not so sure the mainstream FSA would have been much better if at all if they somehow got into power, especially since many of them were directly backed by the US as a political wedge into the nation to suit their own interests.
While I can say many factions such as the Syrian National Army and Pro-Turkish Invaders are absolute scum and many betray the values they claim of "fighting authoritarianism" many mainstream FSA did not seem to provide a better alternative and often made things way worse. And many other FSA and the opposition didn't really seem to care about the rights of other minority groups like Kurds and Assyrians or actively engaged in conflict against them at least in the early stages of the civil conflict.
However some especially those who were willing were willing to ally with the SDF in my personal opinion are an outlier, FSA groups like the Northern Democratic Brigades in particular are genuine examples of a FSA group I would consider absolutely based and Gigachad, and were willing to stand alongside Kurds and other minorities to protect what they saw as genuine democracy from other so called "FSA" groups who they saw as traitors to the revolution.
While I don't know if they would be okay with Kurdish and Assyrian Autonomy/Independence, the fact that they are willing to fight alongside them and to fight for the rights against invaders, and openly detest racism as well as align themselves with the ideals of Democratic Confederalism as a good alternative to the current Syrian political system to me makes me genuinely happy and that the fight against authoritarianism can be universal and isn't just reserved for Kurds but instead everyone who genuinely believes in it. They have my best wishes, although it would be naïve to think they could sway the current civil conflict anytime soon to make Syria a more democratic anti-authoritarian nation, but it still shows some genuinely still believe such an ideal is worth fighting for and that to me shows they are willing to put their balls on the line for such an ideal.