H Peacock,
I am not suggesting that we can live in a world which is risk free, but simply that there are sometimes consequences which are so unpalatable that the risk of them occurring has to be demonstrably extremely small to allow the activity to rationally take place. I would respectfully submit that civil aviation operations around busy airports are demonstrably very low risk, whereas display flying particularly of vintage fast jets is not.
Don't get me wrong, I love to see vintage aircraft put through their paces, but the venue has to be appropriate to the intended display. I don't think Shoreham was, and I don't think that is down to the pilot.