Greetings all

There is a lot of emphasis on earthing the GU10 lamp holder, what danger is there if not earthed forgetting about the "out of arm's reach". The holder is not connected to any electricity it only houses the GU 10 lamp?

And the holder is painted 9/10 times so if you don't use the washer provided (meant to scrape the paint when fastened) the earthing is pointless.