Age is just a number for Floyd, he is still active in boxing but not in professional boxing, its in his gym. No way he will loss against a youtuber, unless he will try to create something that will lead people to be interested in the 2nd fight, but that would be a dumb idea as I know Floyd does not want his undefeated record to be tarnish.
but aging can never be avoided and of course it will all make Floyd's golden age a fondest memory and a story for his grandchildren that he was once a great boxer, Floyd's record will be beaten by young boxers someday and he must give up that.