A very informed comment. In the larger sense of the "Climate Crisis" I agree with you.
In my discussion of Putin's strategy I note the fact that about 30% of the population of North Africa and the Middle East was experiencing hunger in 2021. One third of the population!
So, yes. In the bigger sense, Syria is the first war of the crisis.
However, in the sense of shattering the World Order, I still think the Ukraine invasion is the tripwire signal that the "looming crisis" just became an actively happening crisis. That it is a Sarajevo Moment in the 1914 meaning of Sarajevo.