I'll admit I had my fair share of trouble during BMQ, but it wasn't due to a "hell week", it was more or less due to my own stupidity.
As for hell week, I think the instructors on our course made it challenging enough that we could feel pride in completing it. We all had our fair share of difficulties but in the end you get through it and you're a better member because of it. The worst week for myself was the first two weeks because it was just a shock to the system. However as long as any person has a good head on their shoulders, and works their hardest they should be fine.
I wouldn't say I endured any form of hell week, I guess it all depends on the individual. Some people hated their time out in the field and fell asleep while on guard duty, I myself loved every minute of it. People always speculated about what was happening the next week and if we'd be put through hell, but I think its better just to adapt to the situation and not let it get to you.
As well if you have any trouble completing BMQ or are recoursed all that one should do is learn from their mistakes and take responsibility for their own actions. I've known a few members who were recoursed during BMQ and they aren't any better or worse from other members. I myself had some trouble near the end because of a dirty rifle and was punished for it, however when I had to clean my rifle in the future I never had any issues because I learned from that mistake.
Basic is a unique experience, and even though it seems really shitty at first but the experience is one that you'll remember for the rest of your life and probably look fondly upon once you're done.