Based on the response upstream, I assume they were talking about the latter. There's no art to door to door sales reading a boilerplate. There is an art to researching a customer and curating a proper response to make them feel good.

They said artists. Artists means people who make art commonly. Not everyone with a non scientific skill. The word was incorrect no matter what they meant.

I don't always have perfect grammar on Hacker News either. Charitable interpretation.