Ruby - I agree with your analysis of Pakistani culture.
But ... can't you see the link between multiculturalism and that culture? The reason British-Pakistani men have done what they've done is partly thanks to the multi-culti doctrine that states Pakistani culture is somehow equal to British culture in merit. Immigrants from rural Pakistan have not been encourarged to adopt British culture but rather have been encouraged to continue their lives and traditions as if they're still in Waziristan. For the past 15 years, anybody who had dared point that out was smeared as a racist - it's only very recently that this type of opinion is 'allowed'