Real turkey as a treat is usually loved by most cats.
I'm glad, Mark, that the integration of the new foods is going well. Figures that one cat would shun what is offered on a plate, but decide the same exact thing still in the can is just fine!
I don't think eating table scraps would have anything to do with hyper-t. It wouldn't cause CRF either, unless perhaps if the table scraps maybe had seasonings or something toxic to cats that could case kidney damage. I don't know offhand of any seasoning that would do that. I know onions will cause hemolytic anemia, but that ought not affect the kidneys.
However, if a cat was in the early stages of CRF, and the table scraps were way out of balance with too high protein and/or way too high phosphorus, that could make it worse.