Nothing in the quotes from Keith you give, Jim, amount to advocating or defending persecution of Muslims, which is what you accused him.

It seems pretty self evident that how we act is to some extent culturally conditioned. That does not mean it is the only factor, or necessarily the most important factor, and it applies to highly desirable ways of behaving as well as to undesirable ways.

So when Alibhai-Brown refers to "some Asian cultural assumptions that make the paedophiles feel no guilt or shame about what they do" she is making a reasonable comment about the relation between Pakistani culture and some tragic events.

Well, you could say that words such as that could be used to argue in favour of persecuting Pakistani Muslims, as potential perverts, or even as advocating such persecution. But I note you do not, but reserve that accusation for Keith, who in reality goes no further than Alibhai-Brown.

Very possibly she might be mistaken about the relevance of Pakistani culture on what those men did, after all there are many other factors involved. But it is clearly important for people in that culture to think about such things, just as it is important for Catholics to think about analogous things touched on in this thread.
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In a discussion like this the only loyalty we have should be to what we believe to be the truth. Getting all adversarial about it, identifying enemies and friends, staying silent when someone "on our side" says something wrong, and always seeking to interpret what the enemy says in the worst possible light... That's not about loyalty to the truth, it's about trying to win a war.