The article offers a binary choice between 'sober' and 'drunk' (my phrasing) while developing art and says that 'drunk' art is bad because it glorifies addiction and propagates the myth of creativity. It also equates art with work where being under the influence is clearly unprofessional / dangerous.

Personally, I've found that an occasional beer - and some music - while working on a piece of art (as an unwinding activity) can help me get into a zone and sometimes seems to help me think creatively. If you drink so much that you lose coordination or a sense of what is viable then clearly the effects are negative, but I don't think it's as black of white as the article suggests. I'd agree that if I was a professional artist (I'm not) who couldn't work unless they were stoned, this would be clearly undesirable.