> afaik Siemens Energy never pushed the argument that electricity would be able to do everything humans can within a year or so...

If they had pushed that argument, would it have changed how useful electricity is?

No, but it would mean that they were overhyping how useful electricity was to and it was worth pointing out that if they actually believed what they said, they'd be trying to do everything they said they could do rather than just being a utility company...