The article isn't about the current Swiss system, it's about replacing it with unconditional basic income. It wouldn't be uncinditional basic income if it didn't apply to entrepreneurs.
The idea of basic income is that everybody can afford that loaf of bread. There are no gaps in the system to fall through. Nobody gets to decide whether you deserve it or not. But to get beyond that loaf of bread (and some basic shelter and health care), you need to work.