The author talks in circles and doesn’t say one single word about the show itself. At least not in the excerpt.
The article is not about the show itself.
Like so many “true crime” dramas, it takes an actual case where a black person commits an horrific crime and makes the perpetrator white.
It adds the special aspect, for the UK, that not only was the perpetrator black but also an immigrant, but in the “drama” the perp is a native white British kid “radicalized” by online racist misinformation.