Every person shud hv love for his mother tongue. I hv great love for my mother tongue punjabi but we can't say that Punjabi is sikhi and sikhi is Punjabi.
That's what daler Kaur Khalsa said and it hurt some haryanvi jaats who hv become Sikhs.
Jaats want to become Sikhs but they want to preserve and protect their mother tongue haryanvi.
They told me that they would like to learn Punjabi as lots of sikh literature is in Punjabi but they can't backstab haryanvi.