To expand on this comment/advice - many of us value the award of a flight brevet. It represents a considerable degree of effort for most. None would 'trash' that treasure - that is none who were of the right stuff. To do so certainly does not send the right message.
Whilst not condoning the wearing of them in the way he has done, I think it's worth pointing out that they are awarded somewhat earlier these days than in the past, and that they are almost certainly properly 'earned.' Clearly some of his in-service photos imply they are entirely legitimate.