You don't need to win any wars with it if you can use them to sow confusion, obscure the firing of more serious rockets, and/or trigger a sufficiently more expensive response.
It clearly needs more work, but if an amateur can get this far at this low cost, odds are you'll see attempts at overwhelming attackers or defense systems by sheer volume with cheap decoys like this long before they become an actual threat in and of themselves.
Get the rocket a bit more stable, and force an attack to try to take out dozens of these because one of them might be a real threat, and you'll have created a problem.
Exactly. Consider the current conflict in Iran. They have thousands of drones that cost $50k each. The US’s only real defense against one of these drones is to fire a million dollar missile at it. That assymmetry can win or lose a war.
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