I think I climbed up over those 'wobbly rungs' although I don't remember them as such. What I do remember however is arriving at the base of the ladders and rungs on a very hot sunny day to be met by a queue of people all wanting to do the same thing, we all wanted to get to the top.
I'm sure there is a YouTube video of it and I will always remember a middle-aged English lady and her husband when she froze halfway up the first ladder section, she wouldn't go up and she wouldn't come down. Her husband pleaded with, he got angry with her, he pleaded with her again but she would not budge. Eventually he just a rung below her placed one palm on her bottom and pushed and pushed to get her going, I still remember the handprint, it must have stayed on her clothing for the rest of their walking day. She then finally moved, it was excruciating to watch, but eventually she did make it to the top. Everyone below cheered like crazy!
As I remember that section, it starts with a 20 rung steel ladder, then you have to sidestep onto some individual foot pads screwed into the rock, with steel handholds drilled into the rock at about head level, then another but short ladder section then, then a few more pads and then it's over with.
When I got to the top I was EXHAUSTED! With people ahead of me and the people behind me, progress was so slow and because of the weight and bulk my rucksack on my back and the hot sun blasting me, once at the top I just crawled under a rock drink water, rest and wallow in the shade.
I did find, however, because of my rural upbringing and knowledge of picking apples, pears and cherries directly from a ladder, I quickly used a technique which worked well. The knack is, (for those who have to climb such ladders) to raise your arms to the highest rung that you can reach comfortably and grip that rung. Then pull with your arms and push and climb with your legs until you cant continue, (keep both hands holding onto the single rung, only move your body and legs upwards, your hands keep you safe and secure) then once done, keeping both feet on the same rung stand up straight using each hand to 'climb' each rung at a time until you are at near full stretch again and then repeat your first action. I think it took me three of these body movements to get to the top of the first ladder.