To each his or her own way of doing things. They are your chickens. And my DH would commit me if I considered spending $300 on a hormonal implant.
Part of my lack of enthusiasm for this idea, is probably based on the fact that I have had numerous of these types of birds, and found them active, inquisitive, curious and great layers and a great addition to the flock. I will admit that they do tend to be fine and die the next day around 3 -3.5 years of age, but I only have hatchery birds, and a lot of them die around that age. Chickens are not dependably long lived birds.
So for me, this would not be a good idea, I do try to give mine decent food, clean water and good shelter and bedding. I don't worry too much about a lot of things, but just take what I get handed to me and move on. I think of this as being realistic, others might think of it as heartless.
Mrs K