I don't think the BSS should be abolished but it should be simplified as it seems far too open to interpretation and misunderstanding.
Regarding the bubble tester - some examiners do require this as they don't have the equipment to test for leaks. This is something to check when booking the examiner.
Inspection and testing of the gas system is, for me, the one benefit of the test . Your example demonstrates it might best be done by a qualified gas fitter rather than a surveyor.
I don't suppose anyone makes a living from doing BSS examinations. More thing to do to supplement income.
Isn't the date on the orange hose the date of manufacture?
Another point for debate as I understand its the condition of the hose that is important , not the date on it ?