Agree with the fact that Talaq is not compatible with Sikhi. Even the word comes from Muslim lands.
However, I think you paint with too broad a brush when you call divorce an "abrahamic thing".
Christianity doesn't allow divorce, except for just a couple of specified situations:
He said to them, “It was because you were so hard-hearted that Moses allowed you to divorce your wives, but from the beginning it was not so. 9 And I say to you, whoever divorces his wife, except for unchastity, and marries another commits adultery.”[a]
Marriage is seen as a holy sacrament in Christianity. By contrast, there is nothing holy about marriage in Islam. It is merely a worldly contract, and divorce is explicitly allowed in the Koran.
I don't totally believe this. Yes leave the bad influences but most shastardhari rehit is still kept in India, and you will see the pooran gursikhs get together in Anandpur Sahib on Vaisakhi and Hola Mohalla.
Yes you can see them trying hard here in the west, and there are those who have kept full bana even with some shastars, but still something is missing from being all-rounder pooran gursikh compared to the ladliyaa faujan in India.