"And to the pilot unions out there, you’re doing a disservice to the traveling public…” - Senator Lindsey Graham (R-SC)
The halls of Congress MIGHT be the last bastion wherein old senile guys/gals just can't let go and believe they are as sharp as perhaps they once were 30 years ago.
In the real world, there is such as thing as cognitive dissonance, slower reflexes, longer thought processes before acting, and so forth - all that come with the inevitable passing of time. For a person well-past their prime to be flying passengers around is the real disservice to the traveling public, in my opinion.
Will it generally be OK? Sure ... until it's not.
Very few of us want to "hang it up" but - especially in a heavy workload environment with oft-times the potential for a poor outcome, it might be best to recognize there is a legitimate time to say "So long" - and it's not just before the impact which leaves a smoking hole and a lot of broken hearts.
Just sayin' and, as always, YMMV.