I really enjoyed the perspective of this author and the article's contemplative tone. I think an important perspective is that these are tools for consumers, not creators. While we are all obviously both to a degree, the current economic model makes a clear distinction.
When it comes to monetary exchange, we are either artists or consumers. AI art has the potential to create a massive imbalance between these two fields, reducing the friction of being a consumer, and greatly reducing the number of people who are able to support themselves as artists. If you view yourself chiefly as a consumer this might (very narrowly) be viewed as a positive.
The social cost however is creating a society that favors consumption over creation, and weights incentives accordingly