Yep. I agree on all points.True of course. But very few chickens die, or get sick from a disease related to an old age problem. This is very different with the experience people have with cats and dogs.
I think the large number of predation and sickness/dying young is not something newby chicken keepers realise when they buy their first chicks / chickens.
No chickens of mine died of old age yet.
For me my 3 oldest are the living proof chickens can get 8-9 year old easily, and be healthy and very much alive. I even read that an exceptional 20 is possible.
imho/statement: Chickens who die before they are 7 years old might have died from some kind of health problem or an inbreed problem but didn’t die from an old age problem.
My personal summary apart from the first unlucky batches with bought chicks: 3 reached old age, 2 died too young, 6 got lost/predated.
If I had confined them in a run 24/7 the numbers by predation would have been fewer, but the number of chickens that would have died with a health problem was probably higher. And even more important : if chickens are confined in a run 24/7, without a lively soil and lots of greenery, their life isn’t as joyful as with free ranging time.