Not all animals are pets, some are just for meat and eggs. It’s not hard to understand, it’s just how people are now, they think their opinion on how others keep their animals is their business.
* For the record, I have my chickens in a 25x50’ run with every sort of predator protection possible because owls and hawks were killing the previous flock off one at a time.
I keep Corurnix quail in a very nice egg rollout cage with the space requirements necessary for egg production and fertilization and harvesting them clean so they can be incubated, traded or eaten without having to clean them. There are specific requirements for quail as far as cage height so they don’t fly up and break their necks when startled and also proper square footage per bird and male to female ratio to ensure proper fertilization.
My animals are well taken care of, never mistreated and I love them. It is my choice to have them free range, in an aviary or a cage because I own them and take care of them every single day.