That's the thing though - the article largely blames Pakistanis who are suddenly keen to adopt what is largely a foreign version of Islam. He explicitely says that the 'madresas' are only one factor among others. Of course the Saudis exert political and financial influence wherever they can, as any other country that is in the position to do so. But the cultural aspect that comes with this influence seems more and more welcomed in Pakistan by much of the population, which is what the author finds deplorable.

I'd also disagree on the brain drain. Of course the majority are unskilled labour - but the minority is very important, and includes lots of professionals such as hundreds of Pak doctors who work in Saudi, even though there is a sever shortage in their home country.