They are just kind of old-fasioned guys who believe in reliableness of goverments. That is going to last untill their profits from goverment investments occure to be less than inflation rate. It's just a counterintuitive idea to support projects controlled by authorities as it goes against the idea of cryptocurrencies and blockchain.
It isn't only about "old-fashioned guys". Admit it, it's not easy to learn how cryptocurrencies work.