I appreciate this article . There is no doubt that the writer might have been a pure sikh .
But , Do you think that criticizing and condemning the others will put them into the right track .
Most of the time what I observe is that people advocate to be a sikh because so and so people sacrificed their lives .
Or the things like Do you want to go to Hell ?
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-sikhi-sikhism/5495-to-those-who-once-took-amrit.htmlReference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=5495
So , one should become a sikh on that basis only ?
I think that Criticizing and Condemning the others won't do anything rather it will make them move far and far away .
Whatever the writer has written has used the western psychological persuation technique .
And , I think that GuruNanak Dev ji didn't used that psychological persuation technique to preach.
Instead of using the psychological persuation techniques , first let the message of Gurunanak Dev ji to be absorbed by the others.