I think there might be an advantage by having them if you use it right! Here's why;
If you had maybe 2 older hens you could use those as your broody hens. They should have better mothering instinct activated compared to the younger hens! And then you could use these to make your own flock from their chicks, and by raising your own!
In some bird species, such as flamehair ducks (Mongolian Mergansers, etc) the older ducks have better mothering instincts than the younger birds. Its reasonable that many chickens would be like this also. (And other ducks.)
Its cheaper and funner to raise your own chickens.
...
Couple of things that may affect this;
You may not want all of your hens to be old.
You may want to get egg production as early as possible this year in preparation for all the trouble going around.
Often times the minimum ages quoted for egg production of chickens and ducks is wrong, because of growth hormones, medicaded feed, the sky being blue, etc etc. So you may want to account for this when planning how you will decide what to do and when.