No 99-year-old is "well" in absolute terms. A 99-year-old US man has only about a 66% chance of reaching 100: https://www.finder.com/life-insurance/odds-of-dying. A 95-year-old man has about a 16.5% chance of reaching 100, so he'd already done pretty well.
I wonder what killed him aside just being really old. he died at a hospital and not at home, so something must have happened. his last media appearance was on the 17th of nov 2023.
