In some enlightened groups, writers are viewed as poison. No one with any wisdom or common sense includes them in their inner circle. That's because writers such as James Joyce and now we are coming to suspect Truman Capote manipulate to obtain or even generate copy. Although some might be flattered to turn up in a book or column, most want nothing to do with it.
In THE WALL STREET JOURNAL, Kevin Helliker reports that there is evidence turning up indicating that Capote might have cast a spell on Kansas lawman Alvin Dewey, Jr. as he was writing "In Cold Blood." Thanks to that relationship, Capote received unusual access to documents, people, and places. That's what a cunning writer does.
In return, though, Dewey tasted fame. That's the drug of the 20th century and is part of the reason why the public relations industry is growing in the 21st century while so many other lines of business such as law is downsizing.
Writers know never to be surprised what other writers will do to get the story. The article in THE WALL STREET JOURNAL hardly seems "news."