Right you have to distinguish between the executive and legislative/judicial.
The executive being young and legislative/judicial being old was pretty typical across the ancient world.
Also people tended to not live as long in old age as they do now, we have lots of advanced medical interventions we can do to keep our old people alive and accumulating power and wealth.
Also Rome had a much healthier triangle-shaped demographic/population pyramid so they had more youngish people to draw on for elite qualities. They also had an active military culture so young people could actually prove themselves in leadership positions and make a name for themself. In the developed world in the current period that is not the case.
The executive being young and legislative/judicial being old was pretty typical across the ancient world.
Also people tended to not live as long in old age as they do now, we have lots of advanced medical interventions we can do to keep our old people alive and accumulating power and wealth.
Also Rome had a much healthier triangle-shaped demographic/population pyramid so they had more youngish people to draw on for elite qualities. They also had an active military culture so young people could actually prove themselves in leadership positions and make a name for themself. In the developed world in the current period that is not the case.