I hiked down into it a few years ago. I feel like I'm a well-prepared person. On less than a day mountain hikes, I always bring about 1500 calories worth of bars, 2.5L of water, a flashlight, multitool, and something warm if it's cold. It adds a bit of weight but I feel at ease with some backup tools. I made my way down to the bottom (easy) when I realized I was already out of water. WTF I said and I opened my camelback and behold, there was a hole. When I had sat down for a short breather, a really sharp rock had stabbed right through my bag and water bladder with ease and the the bag completely drained.
I pushed my way back up but it was very hot and I think I hit the first or 1.5 stage of heat exhaustion. Like the article, my brain felt like mush and I felt a massive struggle to move. Luckily, there's a spring or some kind of water source midway or so and I just drank a solid amount of water before moving on to the next. I ended up making it ok but it definitely was uncomfortable thinking you were going to dehydrate as you went up.
Random story but I just wanted to share that you can prepare all you want and sometimes life still tries to kick you in the butt. These days I carry a small garmin device that can call a helicopter anywhere in hte world. It costs a bit but it's worth the peace of mind that if I manage to injure myself to the point of being unable to move, I can call for help.