The link is totally irrelevant, it's about filing taxes and the right to pay to the social security fund not about the income you receive while you have the status. Yes, you get an extra tax break (taxes aren't paid on the money you receive from the state), but that's not the main point.
If there are other ways artists get support do you have a better definition one can search for? Considering it talks about supporting artists I feel it is relevant to the situation in my country. Getting help with social insurance is pretty important in many countries, and something I know many artists have problem with.