Unfortunately, that article is not available from the UK (outside Putney), being a World Service product not covered by our (evidently inadequate...) licence fee.
"The aircraft that failed." Failure, or disappointment? And on the basis of poor safety, or shortage of sales? How objective and comprehensive is this study?
Re post-war airliners, I would rate the Comet as very disappointing, the DC-10 less so. The Comet was a trailblazer that hit at least two unforeseen problems. Those remedied, its second, sound iteration only just beat the B707 into service, and lacked the latter's growth potential.
The DC10-30 was a fine long-hauler with a good safety record, and its payload-range was superior to the L-1011. It was beaten into service and commercially by the B747, although it had better freight capacity.
How does the writer assess the VC10 and Trident? And, for that matter: the Britannia, Electra and Vanguard; the B377, Hermes and Tudor; the Viking and C-46? What about all the Convair airliners, from CV-240 to CV-990? Did Concorde fail? One could go on and on...