My thoughts as well. Felt the old man would be about enjoying what he has amassed to himself in course of his lifetime but, it seems his going to have his heart beating to the volatile nature of the bitcoin market. Perhaps the doctors needs to be kept on alert to nurse him back to health from HBP when it comes kicking.
Maybe his grandpa isn't that old as I like to start but again, it's a useful advice which I felt for someone that has acquired wealth to have already known. That his got to diversify other than having all his amassed wealth in a basket.
What is the use of wealth if it cannot be used or enjoyed throughout his life, regardless of the wealth obtained from investing in bitcoin or elsewhere, even this wealth will make heirs fight over which will ultimately break blood brotherhood, very tragic isn't it?
But whatever it is, I really appreciate the advice he tried to convey to his grandfather, because it will create several opportunities to diversify investment decisions, the most important thing is that access to investment can be known by those who are in control. When something happens, it will not make him lose access because there are people who know the investment process.