Bilionaires and bankers understand crypto. But understanding something and supporting it are two different things.

Bilionaires aren't idiots, they are pretty smart and have good understanding of finances and new technologies. Most of them (exclude very old ones) very well understand what crypto is. They are against not because they don't understant, but because they do. Crypto mean they lose money and power. They don't want average people to make more money. They don't want more awareness about investing in society. They just want to cheat taxes using any possible ways, earn more fiat and remain uncontrolled.

Crypto is biggest danger for them. Of course they are against and will do everything to discredit crypto. All this bullshit that crypto is risky and have no future, used to avoid taxes and to support terrorists is created to discourage average people from it. When rich and powerful say something is illegal and dangerous for you it mean you are right and it hurt their pockets. They don't care about anyone or anything other than themselves.