Oh give it a rest. Everyone except you knows what it means and are far more concerned about the poor victims of this atrocity.
What a really stupidly complacent thing to say.
Others have pointed out it is confusing.
Its all very well getting moralistic and saying because I understand its alright.
Anybody with any experience and consideration of the actual purpose would be much more likely to say and think, I will be more careful next time I use it. Even if only one person benefits from it being spelt out that is better that my smug I'm alright jack.
And no I wasn't going on about it.
But thanks to you diving in at the deep end days after this had been discussed you have provided me with the opportunity to re-state that this is a public notice board where a wide range of readers could be of a very different level of awareness.