yes, there are various 'wise men/women' in virtually all fields. But have you met them personally? Probably no. You know them through their work, and that 'work' is mostly superlative and made them celebrities. Right?
Stephen Hawking, take him for example. Superlative right? But a terrible human as per family life, according to his wife.
Issac Newton, the father or physics and mathematics! Terrible investor!! Invested money in South Sea Bubble and lost everything!!
Robin Williams, superlative actor/comedian! Highly disturbed personal/family life lead him to kill himself...
I can go on and on....
If you're taking personal experiences and other aspects of life into consideration, then the young ones in your first example who excel at surpassing their elders in different professions can also make the same mistakes and be miserable—resulting in no human ever being wise, regardless of being young or old.
Of course, if we are to escape from this statement, we can define (or redefine) what wisdom is (because I have a very shallow understanding of what wisdom is and I did not associate it with personal lives and character traits) and then proceed to evaluate the geniuses based on the new parameters.
Yes. So the young ones are not wise either.
So I say ; there is no wise old man. No one is wise. Our wisdom are collective and inclusive and so are our flaws.
I see. In that case, I concur.