Agreed. Also consider this, the neon screwdriver requires electrical current to flow from the metal end cap on it through your body to earth. So picture yourself in a bathroom working on a ceiling light switch. You’re wearing trainers with plastic soles, stood on a hop up that has plastic feet which are standing on the vinyl flooring, which is laid on dry plywood over wooden floor boards, supported on timber joists over a 7’6” air gap to the floor of the room below. What are the chances of your body providing the earth path required to allow the neon screwdriver to work? Don’t trust neon screwdrivers.