I assure you the sex drive does not disappear with age in all persons. Apparently you think 77-year-olds cannot fondle or molest child victims with their hands, tongues or objects, but they do. Some males are still "able." There is also viagra for the horny old pervs.
It’s a slippery slope to allow this type of killing based on suspicion of potential wrong doing. Where does it end? “Oh I killed that old man because I heard him say he wanted to hurt trans people!”