It does not explicitly admit it, and seeing the quotes pulled separately make it harder to infer. But it's pretty clear when read in context that she's admitting that diversity is being factored into the longlists (which of course play a huge role in which books eventually win).

Are these quotas or just nudges? It's hard to say. But I've been in the room when decisions like this were made, by institutions that are legally barred from even considering race. But in reality, race wasn't just part of the decision, it was determinative.