Looking at writing generally, it seems that there are two things present in the final piece: (i) the information and (ii) the organization and expression of the information. In this particular case, I think Martin Bell is likely to get a good amount of the former, but a lot less of the latter, which he'll have to supply himself, and for which he will, appropriately, be paid. Indeed, it seems odd for those who object to writers working for free to object to Martin getting paid ... wouldn't he then be doing exactly what you're complaining about?
As to the first part: it seems that writers often gather, organize and express information that's provided to them for free. So far as I can tell, the information sources -- be they interviewees, writers of company press releases or whatever -- typically aren't paid.
As to the fear of unpaid amateurs providing the latter (the brilliant prose), it seems highly misplaced. There are already hundreds, if not thousands, of amateur writers running around, desperately trying to publish their words for free. So far as I can tell, there's a sizable number who will actually pay money out to publish their little books and what-have-you. I wouldn't be too worried that they're going to drive novelists who try to make money out of existence.