That loop whole has changed. Defect now has to be cleared (signed off as being fixed) even if you de rego then re rego with new RWC. In short if he doesn’t go get it cleared the Police will eventfully come after you, or just pwne you harder If they caught you driving it outside of the time frame given to have it cleared. This even goes for when you sell it. Get a defect, do the sly and de rego and sell with no RWC, new owner will be flagged at Queensland Transport when trying to get it re rego’d