When talking about keeping animals for any purpose, there are still minimum care requirements that don't constitute "spoiling" - such as providing for minimal requirements for food, water, and shelter (including proper temperature). Your young birds would likely benifit from heat supplied when the temps go down at night. Young animals that are too cold grow more slowly and have less immunity to illness, and probably also just feel cold at times, probably survivable but not what might be considered a good quality of life.
well they aren't getting a heat lamp, I'm not going to risk burning the barn down and killing all of our animals for the sake of their added comfort. They're fully feathered, have a secure and dry environment, and all that they want to eat and drink. They seem fine to me, so I guess we'll just have to agree to disagree about how to raise our animals.