I'm not entirely sure if the 69 year old man is being sarcastic, raising a different kind of awareness against transgenders, or he just really wants his age to be legally changed to 49.
But wouldn't changing his age from 69 to 49 be all for nothing if he eventually falls sick? Plus, instead of begging to have his age change to 20 years younger, I think he should rally for life longevity instead, as well as increased healthspan. That will be more beneficial to him than literally just changing his age.