It would have been more worthwhile in my eyes had the author simply omitted that sentence. Since the focus is on "zero cost living", selling your work isn't strictly necessary - The Machine provides for your basic living requirements. However, s/he mentioned healthcare as an open problem.
And if you're worried about what happens when 10%+ of people spend more than 20% of their time on art, I don't think you need to be. My social needs are by and large not dependent on impressing strangers, but by doing with my equals. I play music with my friends, and no audience, for example. We're out-talented pretty much everywhere we look in that aspect, but it doesn't make things any less enjoyable in the least.
The author seems to predict this will decrease some forms of inequality. If that's the case, I'll have more equals to befriend. I'll have more opportunities to engage in fulfilling collaborations. My sense of social worth will only increase.
And if you're worried about what happens when 10%+ of people spend more than 20% of their time on art, I don't think you need to be. My social needs are by and large not dependent on impressing strangers, but by doing with my equals. I play music with my friends, and no audience, for example. We're out-talented pretty much everywhere we look in that aspect, but it doesn't make things any less enjoyable in the least.
The author seems to predict this will decrease some forms of inequality. If that's the case, I'll have more equals to befriend. I'll have more opportunities to engage in fulfilling collaborations. My sense of social worth will only increase.