And an education regarding what whiteout is will greatly benefit.
As there was no intention of landing, and as the minimum VFR altitude specified by both the company and CAA was 6,000ft, then whiteout should not have been a problem.
But following your argument along, you do not disagree that your stance approves the decision to take a DC10 down to 1,500ft in weather conditions that were below, and reported by McMurdo to be below that needed for the cloud break procedure, at speeds that had to be above 260kts in an area that you had never before flown to, your tour guide just a few minutes before hand advised the Pax that when he knew where they were he would tell them, not appear to be unduly worried that they had not been identified by radar, had no VHF comms with the controllers, all mandatory requirements for this descent, and you would believe that this descent was not a foolish decision? If this is so, and by the content of all your posts thus far it would appear to be the case, then it is certainly pointless carrying on this discussion.
No doubt you will come up with the argument that previous flights had descended below 6,000ft. They had weather conditions suitable for such flight, and were all invited down by McMurdo radar after they had been positively identified. Mt Erebus was never sighted at any time by this flight, are you trying to tell me that was because of whiteout? from 16.000ft?