here
Interesting, although hardly news. Also couldn't shake the idea that Jean-Hannah is bigging up her novelist friends.
The commenter who makes the point about review space has part of the story, and the one who brings up career sustainability has the other.
The same Sam Leith article which is quoted is also the one in which he says that if first novels are no good then he (in the Telegraph) just doesn't review them rather than giving them a bad review. Far more damaging!