Is Agatha Christie still relevant?

Thanks to Oli for spotting this article in The Guardian:

"There is little to distract the reader from the sense of information being parcelled out at careful intervals by an unseen but all-controlling hand. Nothing arises organically. In many ways, she reminds me of Enid Blyton. Her characters are ciphers, developed according to Occam's-razor principles – each one developed precisely as far as he or she needs to be for efficient propulsion of the plot, and no further. The dialogue is frequently risible – either purely expository, or banal musings on human psychology – and, for all that the early Christie books are venerated as beguiling period pieces, there is actually very little description in them, let alone any that makes the 20s, 30s and 40s glint in the mind's eye."

Discuss!