1/ There is now little perceived need to fly really low.
2/ We don't have any planes now, not like the good old days when we could cover the whole country with "the sound of freedom".
3/ The Spams sent almost all their aeroplanes home after the wall came down and so it's still not like the good old days when they had enough aircraft over here to cover the whole of the UK with "the sound of freedom"
Doc C