I agree. The quality of life is going to be poor and the care potentially demanding.
As I said in my article, Slowpoke was able to keep up with his peers. He wasn't bullied or lagging in anything but size so keeping him until I was ready to butcher a batch was fine.
The bird I ought to have...
I hate to say it, but there is a significant chance that if she does have laying potential she might not be able to actually pass an egg.
My hunchbacked, wry-tailed cockerel had a pelvic opening so tiny that I was almost unable to gut him after harvest. Had he been female he'd never have been...