So far I have not heard it. your case is very unique and sounds weird.
why do you lock your assets, everyone wants to enjoy their success.
the best way is to buy real assets, such as land and houses.
also he enjoying his success. but told that he want to lock half of his crypto thats mean 1M$ and others 1M$ he want to spent.Maybe there is some reason.Maybe he is thinking if he locked That money after 5 year it can be 2x or 5x etc.
Most probably yes, he's doing that for a reason and he's too confident about the future price of cryptocurrency he's holding for. That's a lot of money and its too risky to hold that online, its better if the OP finds someone who can help him to secure that money for a long time. In my place, if you have that kind of money you can buy anything and of course you can make a lot of business.