I am sorry you lost your beloved bird. Did you find out what was wrong with her?
You did not offend me at all, don't worry.
It is a common misconception that these chicken breeds will do fine because "nature created them this way".
Keeping them in a secured run might help with some of the problems they have to deal with on an everyday basis, but they cannot interact properly with their fellow chickens, as they are unable to see them and react properly to their moves etc. while being blindfolded.
The continuous lack of eyesight leads to stress, which impairs their overall health.
They will often become infested with lice and mites, sometimes even die from poultry mites, as these parasites love to live and hide in these overgrown crests and the chicken owners only look for them in the rear area of their birds.
Humans have "created" quite a lot of breeds that I would consider animal cruelty. For instance some dog breeds having a hard time to breathe because of their oh so cute extremely deformed short muzzles (Pekingese, Fremch Bully, Mops, etc.) , or those with extremely elongated bodies trying to walk on stumps like the poor Basset Hound, that has the male dogs dragging their male parts on the ground and getting infections all the time because of it. Not to foget their extremely long ears, which has them stepping on them all the time...