The debate has certainly picked up since the Scum lifted it without acknowledgment.
It is a good debate, obviously crashing a perfectly good aircraft (not one of ours surely?) into a target is an extreme scenario. Possibly not if it was the only way to avoid a mass loss of life or to acheive an overriding strategic aim. The WW2 examples of such self-sacrifice are inspirational and heroic. However I do not think the comparison is valid with ops occuring nowadays.
Such self-sacrifice requires inspiration in turn - a just cause or a moral imperative, as well as confidence in credible leadership and in the esprit de corps. I think that - short of a 9/11 type attack on a major UK city - such inspiration does not exist with regard to our operations in Iraq and Afghanistan. Such an order would not be likely to be obeyed. Our troops (etc) are fighting in a morally dubious war with little confidence in a just cause, any moral imperative, political leadership, military management and public support.