So are you saying this reaction to a critical threat is also not warranted?
No and that's not what I suggested.
My point is, to suggest Waddo was cancelled entirely on "Security" grounds is ludicrous.
Other (higher) profile events carry on (not quite regardless but they carry on) as you have so correctly pointed out. An appropriate reaction is to visibly increase security, not just drop everything and cancel. That, surely, equates to running away bravely?