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I think that advice in favour of CCDs is generally given in good faith. Mono CCDs definitely make the best possible use of precious imaging time - they do not necessarily produce better images, but they are more efficient due to the unavoidably low quantum efficiency of DSLRs.
Against that is the extra complexity of CCD imaging and a newbie will definitely find that daunting.
DSLRs have obvious benefits and can produce stunning results in the right hands, but I think that the best introductory camera is a cooled OSC, which allows the user to start out with a relatively simple approach (eg no flats or darks) and develop increasingly sophisticated processing methods as experience grows. A good OSC will still be less sensitive than a mono camera, but the user will be able to produce good quality images and will be developing skills that can be applied to a mono CCD if the bug bites deeply in future.
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