I don't discount Munger and his knowledge, but he and Warren have been far from always correct. I do agree with the idea the crypto currency fad may take a huge hit at some point, and not recover to whatever the peak level is before that hit, but the idea is ride a fad with the knowledge to bail when the tipping point hits, and have enough profits in the bank going into it that you aren't losing anything but some of the profits.
I can see countries turning their own currencies into a crypto format, but making it trackable to the government of course. People won't like that aspect, but it makes it more viable as a business tool than the current crypto. The blockchain concepts will start to find more uses, but the phony(my words) currencies probably fade.
Munger and Buffet could easily see the benefits of tech and how it was being adopted in their own businesses, yet because it wasn't something they understood they didn't start investing strongly in it until later, but profitably. Think if these guys had listened to the people in their firm who were most likley pitching investing in AAPL, AMZN, etc long before they finally did. The wealth of their funds would be astronmical, not that they aren't now, but even more so. Stubborness prevented them seeing the huge opportunity.
My 2 cents, and wishing I had kept that other 900shares of COIN today. Uggg