> book descriptions have become so bland and tropey that they tell us nothing about a title’s style or contents. Words like “dazzling,” “brilliant,” and “amazing” have become so ubiquitous as to lose all meaning.

There's a reason why tools like GPT seem so good when writing marketing, advertising and business copy in general. The problem is that this type of content has been for a long time completely devoid of... content. Most of this kind of text is formulaic, pompous and yet utterly devoid of deep meaning. It is as low-entropy as you can get. So, no wonder that a stochastic machine can produce this kind of text in a so believable manner.