Because it’s sensationalist reporting that is capitalising on existing anxieties in society.
The MELD score for liver transplants has been used for at least 20 years. There are plenty of other algorithmic decision models used in medicine (and in insurance to determine what your premiums are, and anything else that requires a prediction about uncertain outcomes). There are obviously continual refinements over time to models but nobody is going to use chatGPT or whatever to decide whether you get a transplant.