See that alot around my area. Just assumed no line side feed coming in to open meter. Road side signs and sub division entrance is common for this abandoned look. I would think POCO would be responsible for making sure to de-energize or safety blank with tag, not the AHJ.
I've noticed a lot of meter sockets in public spaces here in the Miami, FL are are of a type that has a plastic shield over the contacts so the passing fingers can't touch them. The shields have across shaped slots through which the meter's contacts presumably plug in.
The connectors don't look standard, so I don't think you can plug a regular meter in (at least not with an adapter), but it would be nice to see this type of meter socket become standard; it severely reduces the danger factor of an empty socket!