If money is a fiction, and if successful companies create money, then successful companies create fictional currency and assets. So crypto being successful and creating money is just as bad as a successful company like Facebook or Google. Because money is fictional and therefore useless. And it's okay to accumulate a useless asset like money? Strange. Is there another game we can play? One that exits from this bad capitalism? Because chasing after money, a fake and useless asset, is not good.
It's fiction in the sense of value set arbitrarily by people. In the end the value of most things is like that. People are ready to spend more money (meaning they value it higher) on houses bigger than they need, without getting any utility out of it for instance.
Money is debt. It is a relationship between people, not a thing made of matter. In that sense you could describe money as fictional, but certainly not useless.
