Yes first sentence says bolted and wired to kart.
The rule as written says must be wired to kart.
The only thing that is optional is the safety wire or safety clip in the exposed 1/4 inch of bolt past the double lock nuts .
That's what the written rule states.
Assuming it is incorrectly written , would be an assumption .
Clarification is needed on the safety wired to kart part of the rule.