You raise a valid point there - it's an appalling dereliction of duty by those who should be responsible for the vulnerable girls.
However, there needs to be some debate on the data.
Prof Ella Cockbain from University College London was on The News Agents (excellent podcast by the way) and has expressed concerns over the inconsistency of the data being used (alluded to in the clip I posted). The data we have doesn't really add up in any way.
She goes further though. Sajid Javid, when he was Home Secretary, commissioned the Home Office to produce a piece of research on grooming gangs. It found that the majority of those convicted of grooming were white British (as you'd expect looking at demographics), but there was no evidence of over-representation of ethnic groups in grooming gangs.
This was the Home Office's own data.
This is a very long report but some of it makes for persuasive reading:
https://discovery.ucl.ac.uk/id/eprint/10087386/7/Cockbain_0306396819895727.pdf
And here's the News Agents podcast on the same:
https://podcasts.apple.com/gb/podcast/the-news-agents/id1640878689?i=1000607166032
I think the overall thrust isn't that these crimes have been committed, but we should challenge the narrative that (as Suella Braverman has claimed) this is an issue related to Pakistani men "who hold cultural values totally at odds with British values"...and look at the evidence (data).