Earlier quoted context omitted.
If you mean that as opposed to part of it being converted to taxes, I'd argue that's not quite "the right thing". Or does the artist not benefit from public goods and services, like roads, public lighting, police, firefighting, etc etc etc?
It's the artist's responsibility to pay their own taxes. And yes - anonymous gifts like that are taxable income too.
https://www.irs.gov/businesses/small-businesses-self-employe...
Take this with a grain of salt, I am not a tax attorney nor an accountant.