Genuine free range is better for the envt. Not fake 'free range', where cage hens get a plank to perch on.
I once visited a farm where the famer was raising pigs and cattle using organic methods and intelligently 'rotating livestock' in his farmland, giving it time to recover. He had turned the farm around; topsoil was coming back, a nitrogen loving weed overgrowth was receding, vegetation native to the area was returning. The farm was heathier and closer to homeostasis.
To distinguish between fake and true, ask questions. And speak to the source of your food. As this farmer said... to eat well, nothing beats a direct relationship between producer and consumer.