Well, she's right of course on both counts, and any publisher would be mad not to use whatever is available to market a work. I've done it myself. When I published a literary magazine I and my colleagues worked like hell to sell the short stories we had chosen to publish, and we used all the marketing tools we could grab: buzz words (urban was the big buzz word of the time, so we subtitled the mag New Urban Writing, though we never for a moment let this influence the stories we chose, and not a soul ever complained about this last, which shows the power of the label); bright colour:
fancy photomontages: and towards the end, big bleed photos:
What we were trying to peddle were recognisable coolness and an air of youth, but what we were actually selling were the challenging and often experimental creations of talented and serious minds. As any snake-oil saleman will tell you, you can sell anything; you don't actually have to give people only what they think they want, as current marketing philosophy would have it.
On the other hand, though, I did always have a kind of sinking feeling, a feeling that things shouldn't be like this, that in a better society words would not have to be sold like this, subsumed to fashion and image...