Inasmuch as Bitcoin has a vague resemblance to gold (people hoarding it as a store of value) ...
Yes, exactly, and another word for hoarding is of course saving.
WB's philosophy is about putting capital to work ...
Great, but the problem with that is when the capital represents trillions of currency units at some point there simply isn't enough work to continue keeping pace. You'll begin having people working on things nobody really needs or cares about.
I wouldn't expect WB to see its utility. Not yet, anyway.
It's ironic to me, because his great investment insight IMO is boiled down to ability to recognize enduring quality in one form or another. He's able to strip away transitory aspects of a business and focus on core offering, that which can yield long term competitive advantage, and see that before the market does. Couple that with a stock market in a highly inflationary environment and you stand to make billions over time. So in a way his wealth IMO springs from betting on quality set against a devaluing currency, although not overtly, something gold bugs might relate to.