Perhaps there is an element of that but I think many people are bracing for a repeat of the Iraq weapons of mass destruction scenario so they’re starting early with using humor as a coping mechanism.

Many also feel that Israel’s current government is a fascist genocidal regime that very likely will be the instigator of WW3. Which should be a lesson to humanity in general on fascism as those that face the greatest trauma (as they did in WW2) are often more open to the extremes of nationalism and ethnic cleansing.