I somewhat disagree with this analysis. (And I think you've not been on Conception or Vision John, so feel free to correct me if that's wrong.)
The hatch was above one of the back bunks, center of the boat. It exited into the rear of the galley/salon and when you came up through it, you would have been facing the back of the boat. The distance from the hatch out the galley/salon and to the open back deck was - my estimation - 10 feet or so and you passed through a 6-foot-wide opening to get out. I believe you MIGHT (certainly not a slam dunk) have been able to get out of the hatch, run at top speed that last ten feet to the back deck (which early on was not engulfed in fire) and other stayed on the back deck or jumped over into the ocean.
Could 33 people have made it through? Don't know. And because there is still, even with these new regs, no standard for how long it should take to evacuate a bunkroom - for perspective, every airplane has to meet a 90-second evacuate standard to be certified to fly - there's no way to know for sure.
But as for a blanket statement that no one could have gotten out and the escape hatch was essentially useless, I will respectfully disagree.