Not a problem. I'm not easily offended. I have been one of the KAT instructors for alot of years and I have had to explain this particular issue many many times.
..and yes, I do believe that some kids are more prone to the condition than others largely due to lack of flexibility. From my understanding of the issue, there are also genetic trends in which it can run in families due to anatomical build.
I have seen it firsthand when I had to deal with a kid who developed spondolysis while on team in my gym.
One of our team girls decided it would be a good idea to do backyard gymnastics on one of her friend's clothes lines at home. She fell, and as a result of the impact she developed spondolysis. She is naturally one of the most inflexible kids I have ever worked with. We have worked for 3 years just to get her shoulder flexibility to open up. She is a very solid, tightly built kid. So, her lack of flexibility combined with her impact injury made the issue difficult to handle.
During the time that she was under physician's care, I was in contact with her doctor on how we should work with her, and what her restrictions were. He and I were on the same page in our thoughts on the issue, and he backed me up in my refusal to allow her to perform activities that would worsen the condition. In her case, it was more about her doctor and I holding the reins on her and her mother because her mom was pushing for us to train her in spite of her injury. I had to flat refuse to let her on the floor multiple times until her doctor released her for activity. I had to reassure them that rehab WAS her training at that point..it's about longevity, not immediacy.
We helped with her rehab, and did the drills her doctors provided for us, but it was a battle to keep her from going home and doing stuff that was against the doctor's orders. We removed her from workout, other than her rehab drills, for three months. Her doctor told me that if she didn't abide by the rules, to let him know and he would perscribe complete bedrest that would completely stop her from any activity. So, he and I kept tight reins on the things she was allowed to do until her injury healed.
Once she was released for activity, we had to be really careful and move really slowly in order to avoid re-injury. That was last year. I still watch her closely, and if she starts showing signs of fatigue to her back, I stop her from further activity.
I am kinda old, and like many other people my age, I did gymnastics back in the dark ages of the sport. So, I live with the ramifications of it with back and neck problems. It was my choice, and I would never give up my participation in the sport because I love gymnastics and I can't imagine my life without it. BUT..if I can help a kid avoid the same issues later in life while still participating in the sport we love, then, I will train them with that caution in mind.
The thing is, we don't know which kids might be genetically more inclined toward the injury and which kids aren't. It's not something you can look at a kid and see. Plus, even in kids who aren't genetically prone to the condition, the condition can still develop. So, I agree with what you said, it's better to fall to the conservative side of the issue.