some time ago I used to read accident reports in the electricity industry.
One (quite unusual) related to a socket where the earthwires had been connected to the backbox, with no flylead.
due to long-term damp, the backbox corroded and rusted, affecting the fixing lugs so that eventuially the screws lost continuity, and the socket and appliance lost their earth.
I don't remember what the other fault was that led to the accident.
Flyleads are so cheap and easy that I see no point in omitting them.
One (quite unusual) related to a socket where the earthwires had been connected to the backbox, with no flylead.
due to long-term damp, the backbox corroded and rusted, affecting the fixing lugs so that eventuially the screws lost continuity, and the socket and appliance lost their earth.
I don't remember what the other fault was that led to the accident.
Flyleads are so cheap and easy that I see no point in omitting them.