if your conclusion is correct, then this was an act of war by Turkey against the Syrian state
Since they've been shooting each others aircraft and helos down for at 2 years I think that's a somewhat belated recognition. As such, the Russians were knowingly putting themselves in harms way.
However, I doubt very much that the Russians will do more than protest, they dont want a war with Turkey.
I note the Russians have advised that the Moskva off the coast has been given new ROE to enable them to protect their aircraft, and are deploying SAM. They should be wary of any engagements, I believe that their airfield is within long large
artillery/rocket range of Turkey, and they would invite retaliation.