Technician reported C182 AD compliance concerns.

Narrative

AD 78-01-14 lists actions to prevent an inflight fire. By installing nipples on a bare battery contactor; the possibility of an in flight fire is drastically reduced. Early model aircraft originally did not have any protective parts such as nipples to prevent an accidental grounding of the battery contactor. However; newer aircraft have items similar to nipples and protective covers to prevent an accidental grounding of the contactor terminals. Please note an accidental grounding of a battery cable delivers enough amperage to create an electrical arc similar to an arc welder. This could create a hole in the fuselage in one second and deliver enough heat to ignite paint and residual oil.The problem- AD 78-01-14 is only applicable for aircraft using certain ELT installations. The owners for these older aircraft are updating the ELTs to newer versions. As a result; AD 78-01-14 will no longer be applicable to these aircraft; so an airworthiness directive requiring the installation of nipples will no longer be enforceable by means of the AD. However; a problem with a loose cable or tool in the area of the aircraft battery is still an area of concern. Many modern aircraft still leave the factory with protective equipment for the battery contactor.My recommendation is that AD 78-01-14 be revised to not restrict applicability to aircraft with the ELTs. This AD should be applicable to all aircraft.