David Anderson said he likes the idea of BOINC computations being rewarded with cryptocurrency and that's an essential point here. Those rewards are monetized and are worth something on the crypto-exchanges and David is obviously fine with that (since he is mentioning that Bitcoin reference).
After that, money follows its own path and one can do with it as he/she likes. I can rain it all over, hoard it, lose it, whatever. You can't have it both ways - being rewarded and completely avoiding the negative aspects of being rewarded. Obviously, benefits outweigh the drawbacks here and I would say that David Anderson (and the BOINC community) understands that.