Too old, or too aged (in the head)?
Bernie Sanders has been dismissed as too old for how many years now, and yet he's still sharp as ever.
Ron Paul was laughed at. On the debate stage. And he was called not just old but loony because of it, even though he was as sharp as ever.
Then his son Rand gets elected, and it's like, "Oh, gee, he's his father's son, he should be president!" and Rand is a about as solid as helium balloon caught in a tornado.
Biden and Trump have been running on fumes of a questionable kind for years now.