So when plumbed to only one cylinder, it may well have PCV operation at light throttle, but for the other 7 cylinders it will be blowby, either out a vented
oil cap, or hose to atmosphere.
So any tech who passes PCV that is not sealed in one form or another, or not plumbed to a continuous vacuum source needs to look at the rules.
I would have thought that California would be tougher than Australia.