I don't think the OP just wants fewer eggs, I think they want better lives for all chickens no matter their breed.
They talked about selectively breeding for fewer eggs.
I said such chickens already exist, because they do.
Many were adopted so I don't know for sure what breeds they were. The one who complained the most about laying was a Lakenvelder. We had a Silkie who laid a lot of eggs but when you read about them they say they are not prolific layers but that was not our experience. The eggs were small but they came out often.
That's quite interesting. I agree, Silkies are not usually known as prolific layers.
To be natural, like mother nature intended, they would have to lay no more than 15 eggs per year. I'm pretty sure nearly all chicken breeds today lay more than that.
Why do you think mother nature intends them to lay 15 eggs each year?
That sounds like the right amount for one clutch, but I would expect them to raise more than one clutch per year.
But let's say, for the sake of argument, that there were some sex-links that needed a good home. They are bred to lay as much as possible. Would you refuse them because of their breed? Or would you implant them if you could? I would if I could without driving out of state.
If you want to buy sexlinks, and get implants for them, I have no problem with that. I hope you can find a vet that will do it for you. I don't mind if the FDA allows the implant to be used that way, although I also don't care enough to do anything about it.
But if you really do want chickens with a particular trait (low rate of laying), I think it makes sense to get chickens with that trait, rather than ones that are strongly selected for the opposite trait (high rate of laying.) Getting high-producing hens and then complaining about their rate of lay is about as silly as someone getting a cat and then complaining that it is not a dog.
I think the best option would be start breeding chickens for Less laying instead of for more laying.
Do you mean a few kinds as pets, or all hens?
If you want a few as pets, such chickens already exist.
If you want it for all hens, I would strongly oppose it on both financial grounds, and animal welfare grounds. If each hen lays only a few eggs, then companies would have to raise many more hens to get the eggs people want to eat. Eggs would become much more expensive to produce, and the living conditions of the hens would probably be even worse than they are now because there would be so many more hens involved.