No, I don't think I know better than the authorities. However, shooting anybody down near London is going to be a lose-lose situation, and I did enjoy my mental image of a C130 with a net (later considered spear guns).
Given the amount of damage a stray P51 can cause in a crowd I'd say it's worth bothering about. Though the more I see the implications of the Olympics on ordinary Londoners, the more I can understand why so many of them didn't want it.