The thing that really takes the biscuit is that the statement is never accompanied by a definition of the writer's terms (the word 'art' can of course carry different meanings). (Well I guess Adrian has a bash.)
Here are some of the Shorter OED definitions:
From Middle English, base meaning 'put together, join, fit'.It seems to me that the current opposition of 'art' and 'craft' on the web is a hierarchical one, and on the whole the thrust seems to be to value the notion of literature as 'craft' (and thus honest and straightforward) over the notion of literature as 'art' (airy-fairy and pretentious) - and the idea seems to be that those who consider their writing 'art' are being pretentious. Inherent in all this is a concept of literature as inferior to or at any rate different from the 'real' arts and of writers requiring less 'innate talent' for their chosen form (Adrian Slatcher) than do, say, musicians or painters.
I. Skill ... 1. Skill as the result of knowledge and practice ... Technical or professional skill ... Human skill as opposed to nature. 2. The learning of the schools; scholarship (now archaic). 3. The application of skill according to aesthetic principles esp. in the production of visible works of imagination, imitation, or design (painting, sculpture, architecture etc); skilful execution of workmanship as an object in itself; the cultivation of the production of aesthetic objects in its principles, practice and results.
II. ... A pursuit or occupation in which the skill is directed towards the gratification of the aesthetic senses ; the product of any such pursuit.
But the OED definition of art I 1) would apply very well to any 'mere' or 'down-to-earth' craft. As for the last two definitions I've quoted, well, what I want to know is what good piece of literature is not a work of 'imagination, imitation or design' or not 'directed towards the gratification of the aesthetic senses'?
The deeper question to ask here is: why is there such a fear of the notion of literature as art? Is it linked to the general commodification of literature and does the fact that so many are expressing it mean that writers have finally been cowed?