You are completely right, both Fishhead and MLP. I've seen it time and again in media reports - including reports of Service casualties. But what is the solution? Un-invent modern communications? A bit like the argument against nuclear weapons, really.
The really appalling thing about this incident - to me - is that it involved ordinary, innocent people driving along a public road. It could have been my family or friends. And of course it does involve somebody else's family or friends.