What matters more is recognizing the grand variance of human experience, and that while some may take a lifetime to accumulate even a little wisdom, others can possess unusual abilities and perspectives at any age. It's not like this is news, history is full of such young figures.
I often think about the old parable about a man walking down a road that comes to a fence. There is another man on the other side. He asks him to open the gate, and the man replies, "I'll open the gate if you can tell me why the fence is here".
It's not in your "self-interest", the way you mean it, to review your ideas and believes from when you were younger and realize that with your extra experience you see things differently now.
And just to be 100% clear, I am all for having younger people in critical positions and don't try to argue that one is better than the other.
My reply was on how age matters. Don't know why you try to twist it to a generational flame-war.