I can only speak for what I saw and observed on that particular dive where a diver needed hospital treatment. Ive described the nature of the incident that took place. To ask what degree of incident id expect them to become involved with would be pure conjecture on my part, I am neither French, nor a dive operator nor a Police officer nor have any international legal knowledge.
The police became involved. Its a very small atoll. Word doesnt take long to get around a strip of coral in the middle of an ocean. Did I see them anywhere on any other dive or conducting any activities pertaining to diving - NO. Repeat - they do not sit at the airport and check Cert cards nor do they inspect your gear. Tell me that in the US police do not examine dive equipment after an incident where a person has been hurt? how is it so different - because they are there and done that day? one agency deals with the entire thing?
Equipment used by divers in Aus involved in incidents/accidents is examined by police and if on a commercial diving boat or with a commercial diving op worksafe will often be involved. If it hadnt been for the incident with that diver on that day then I would never have seen the gendarmes other than when they checked my drivers licence on another island.
I dont know about you but id rather have an incident resolved quickly and efficiently than deal with government agencies piling up folders dragging things out for months.
A lot of french protectorates ask divers who are not CMAS or havent dived recently to do a check out dive, thats also French Policy. Its up to the operator if they want to enforce this. Its not just French Polynesia...and for the record I didnt do any checkout dives...I correspond with operators very well way in advance of arriving so everyone knows where things stand.
I believe checkout dives are done in French protectorates Reunion Madagascar and Mauritius - someone choosing to spend your dollars elsewhere is not going to hurt French Polynesia's economy at all. Most of the European market has no objections. Neither do I. Cant see Bora Bora going out of business in a hurry.
Basically an hour of gear checked, boxes ticked, everyone diving at the certified level, diver now released from hospital, thank you for your co-operation and that was it. Just the way things are done there. Ironic to hear people complaining about a rapid and thorough response from the authorities when usually people are bitching about how long it takes.