Even to a non-engineer, that article looks full of inaccuracies.
For instance, they say their tools didn't fit the nuts and bolts of the Whittle, which is possible, but that's ascribed to the Whittle using metric standards, which seems unlikely.
On a much more important note, the centrifugal compressor is described as "very inefficient." Undoubtedly the axial compressor was the future (and A.A. Griffith was right in the long run), but Hooker, who made his name on centrifugal compressors, records that he was unable to improve Whittle's design, it was so efficient (I suspect he was rather miffed to discover this). It also says that the GE team was helped by the study of "jets salvaged from the German V-2 rocket bombs." Surely not, even if it's a typo for V-1?
I'm afraid even as personal reminiscences, it's pretty skewed to being mere puffery for GE (the Brits, it is claimed, asked GE to develop the engine because they couldn't: he said that, I didn't). Pity.