So who's going to extracate you from your mangled C172 when you... are trapped
Urm... well your small aerodrome volunteer fire crew aren't, with their one rusty axe and a crow bar, because that is all the cutting equipment they have got.
Duxford is a Cat 3 airport with a professional crew and a lot more specialist equipment than the majority of Special Cat and Cat 1 airfields.
Chalk and cheese.