I did this dive last December on the same boat, with Randy as DM. It was my first and only time there, and my first time at that depth (139'). We breathed Nitrox 28. I had experienced buddies who had made this dive many times, but it's hard to stay together in the current, we ended up surfacing separately. I started back up with 1100psi and had plenty of time for a half-depth stop and safety stop, and the boat was close when I surfaced. I recall it was about a 24-minute dive for me. I thought it was a challenging dive but a very interesting one too, especially passing through the "Hole". You really have to keep an eye on your gauges throughout. Don't know how the DM would pull a surface buoy and still lead us into the hole. The briefing was very thorough and I'd had lots of pre-dive advice from my buddies..
I probably had the least experience (about 110 dives, Rescue and Nitrox cards) and least sophisticated gear on the boat that day. It all worked out well, but it's a pretty advanced dive at least from my perspective, so I didn't take it lightly, and I'm not sure I'd have wanted to try it with much less experience than I had at the time, nor without a more experienced buddy with local knowledge. With these, I'd do it again if the sea, current, and visibility were favorable.
Don't know if this helps the discussion or questions above, but these were the observations as the basically "average" weekend diver I consider myself to be.
I agree with others that we don't know all the details of this incident except that it's a tragedy, and my condolences and prayers for the family.