Difficult to see what the difference in training benefit would be!
This is the attitude that lead to the CAA requirement for all Flight Training to be conducted from licensed aerodromes, which offer a level of safety for flights involving unlicensed pilots. The Licensing requirement for training has been removed but replaced with personal responsibility for the instructor authorising such a flight to ensure that the airfield remains suitable for an unqualified pilot. If its closed, there is no guarantee of any safety services and it is not suitable.
I went to a number of farm strips during my PPL training, and they most certainly didn't have a fire service!
If the CAA had realised that you probably would not have obtained a licence. If you logged it and claimed the hours, that is a false declaration which is an offence.