There are two separate but possibly interrelated issues here.
One is that the guy was an utter fantasist and a pathological liar. This may or may not indicate some kind of underlying mental health issue: either way it’s dishonesty.
Then there’s the other issue. Plagiarism is theft of intellectual property. It’s the biggest no-no in academia and on its own should be enough to discredit any academic career.
Except that, as an active academic, I know this isn’t the case. I’ve had my work plagiarised. I had no option but to flag this as the reflection on me could have been professionally catastrophic. Yet I was the one made out to be the problem for raising this, rather than the cheat for being a cheat and a thief. My tenure as an external examiner for that university ended the following year and I received not so much as an email in acknowledgment of four years’ goodwill.
I REF reviewed a monograph written by a professor. It was abysmal. It made spurious claims about the research which were demonstrably untrue and I suspect - although I would certainly not make such a claim without evidence - that significant portions of it were written by AI. The writing and research were shocking. I have undergraduates who could have done a better job. I came under pressure from above to improve my REF scoring. I declined.
My point is that morally corrupt, incompetent, even cheating academics are far from a rarity and are often protected, not infrequently at other academics’ expense. But this should come as absolutely no surprise in a sector in which management consistently fail upwards.
Cambridge clearly promoted this guy well over his level of capability. It isn’t the first time I’ve seen this and people can and will put their own interpretive gloss on it. But it happens all the time and any adverse consequences are frequently rugswept.
Given the above do I believe that the right wing media went after him specifically because he was black? He’s a cheat; this is not letting him off the hook. But yes, I do.