[nabilhat]

Mentioned in the video, but worth repeating. This one like many old appliances is ungrounded. What's wrong in this video is the suggestion to rely on neutral for ground. Neutral is not ground and shouldn't be relied on for electrical exposure safety. Not mentioned is the condition of the interior steel's plating. The galvanizing (at least zinc) and chrome are separating from the base metal in areas through oxidization and abrasion.

The design risks have value and are worth preserving, but "this device predates safety" is a real factor to bear in mind.