When I first arrived in Bali in 2008, managing a dive centre in the East we set guidelines for divers at Crystal Bay:
a minimum of 50 logged dives
experience in deep and drift diving
and to have dived within the last 6 months
This was our attempt at weeding out the unsuitable divers. However, we probably lost more divers than we won, most who were deemed too inexperienced for CB just went off and dived with someone else, mostly our neighbours, and we lost a lot of business that year.
I personally have had one DM tourist guest hanging on my BC on a safety stop with his fins on the surface, unable to stay down and risking his feet to the boat propellers. Looking at his qualifications and experience level, he was a suitable diver for the site, however, once he was in the water that was another story.
Unfortunately, a lot of dive books on the market, still promote CB as the ideal place for a Mola2 encounter, so divers will not be talked into another site, even if it has less boat traffic, less current, and longer time with the Mola2.
So, although fingers are being pointed both ways, at divers
and at dive operators, it has to come down to the customer needing to consider whether they, personally, are ready for a guerilla dive, so that if it all goes t*ts up, never mind whether your friend wants to do this dive, can they self-rescue, do they carry an SMB in case they get swept away (and do they know how to deploy it), are they fit enough to swim against a strong current (a lot of divers can't even fin properly), and did they listen to the dive briefing which starts with ""'people die here"""??
We're in the middle of crazy season now in Bali, with many divers wanting to head over to see the Mola2, and it's such a shame that we have had so many accidents this year, but hopefully the bad press will help to encourage the authorities to act before divers stop coming to Bali altogether.