Is there any solid evidence that men from these 'other cultures' commit VAWG at a greater rate?
I don't know, but that's not really the issue being discussed. No one's saying that white men or British men don't commit VAWG. We know they do. But the issue being discussed is how groups of young men from, e.g. Pakistan or Albania, are presenting a specific threat to women in the UK. So, the grooming gangs would be a very good example. Or we could talk about forced marriage or FGM.
It feels important that we don't pretend that the countries these men come from, their cultures, values and even religions are not a factor in these cases. We don't know enough about what the specific factors are that are contributing, because we're afraid to look at these men, because we don't want to be accused of racism. And that means women and girls will continue to be harmed. Why are we putting men's feelings above women and girls' safety? Or is it not just men's feelings, but our own feelings that we are good anti-racists? What's more important?