Its a "retirement center" and not a "nursing home".
Hermann Sons does the same thing with their retirement home in Comfort "
be in good health in the professional opinion of the Grand Physician"
I think with the cancer and tuberculosis, the stats of the people coming to them with cancer... the odds of getting better and being able to actually live some time in the center are probably not great. Tuberculosis.. I don't know enough to comment.
Same thing with the vision/hearing, they are a retirement center where you are expected to be somewhat self sufficient. If you need care from a nurse type, they probably aren't where you want to be.