I have argued before that it is an abuse of power for major newspapers to run obituaries of obscure back-office staff, simply because they can.   This is an abuse since a newspaper is a public organization, playing a very public role in public life,  not some private family newsletter shared, like samizdat, between close relatives over kitchen coffee.
The Guardian now runs, as the cover story in its Saturday Review section, extracts from the piano-learning diary of its Editor, Alan Rusbridger.    Perhaps there is nothing actually unethical about a major newspaper running long cover stories about its Editor’s private hobbies, and promoting his new book.  But one has to ask:   Is The Guardian now the private family newsletter of its Editor?