I agree with those who say it is better not to discuss the issue of whether some races are, on average, more academically successful or of higher IQ than others. It is better that each person is treated as a unique individual, and they should ‘not be judged by the color of their skin but by the content of their character’ – and of course their suitability for the job or educational course place.

However, there are those who promote racial discrimination in favour of blacks – this is particularly the case in American universities, but not uncommon here. 

https://www.ox.ac.uk/admissions/graduate/access/academic-futures#:~:text=The%20Black%20Academic%20Futures%20Scholarships,pursue%20graduate%20study%20at%20Oxford.

And the argument they commonly use is that blacks have the same average ability as other races, therefore any difference in outcomes is due to racism, therefore blacks should be favoured in job and educational course applications in order to equalise outcomes (because otherwise, when candidates are accessed as individuals on their merits, they do less well on average). So they are the ones bringing up the topic of whether blacks have the same abilities, on average. That this is discussed is to everyone’s disadvantage. But it isn’t the fault of people like Bostrom.