Navdeep Singh Ji,
welcomekaur
It is good to have your input here at SPN. I have glanced at your blog which raises some thought provoking issues so I hope to interact with you more here too 
On the whole, I agree with much of what you say. However, there are some thoughts that have crossed my mind as I read your posts.
- You place much emphasis on the the fact that Bhai Laal Ji is a descendant of Bhai Mardana. Surely this encourages an elitist attitude that you are accusing amritdharis of? My sister and I are very very different people. The fact we are descendants of the same person means nothing when you judge our abilities and personalities. Sikhi places importance on the person and their deeds rather than their descent (hence rejection of the caste system).
- Bhai Mardana was born into a Muslim family but after becoming Guru Nanak Dev Ji's companion can you really say he was still a Muslim as he was practicing a Sikh way of life? In the same way we don't call Guru Nanak Dev Ji a Hindu even though he was born into a Hindu family.
- Tasleema Langoo has proved herself to be devoted to Sikh kirtan and I commend her for that. However, can that really be said of other non-Sikh kirtanees? How can you be sure that they aren't there just for the money or to purposefully distort the messages of gurbani?
- How can you be sure that monay Sikhs aren't Hindus looking to bring Sikhi into the fold (as many Hindus wont accept that Sikhism is a separate belief system)?
I am not defending the status quo as there are many things I am unhappy about but these are thoughts that I have been mulling over and would be interested on your take.
Regards,
Jasleen