Everyone would rather circle around the answer
it only works against rocks and fireworks not a properly armed nation
That's a very weird logic. If I claim I have super powers and there are 0 documented cases of me doing anything super natural, you have to be the one to prove I don't have such super powers??
You see how ridiculous this sounds? I am saying it gets ridiculous really quick.
No I don't, do you?
You could use this logic on anything and it gets ridiculous rather quickly.
Should I assume also that Mozambique intelligence carried out a gazillion sophisticated stealth assassinations that none of us has discovered yet? we don't have the count too, right?
(I can list some much more ridiculous examples, this logic doesn't work, here's the alternative: 0 evidence so far of any of that happened -> it's safe to assume it never did until proven wrong)