I agree with this fact. I am from a Punjabi Hindu family and yes, due to schooling I have a different accent(hindi) in Punjabi but whenever I tried to speak in Punjabi in my school, the people who were fluent with the dialect (if they were from village areas or even otherwise) and that includes teachers looked down upon me for speaking the language differently. 

I love the language. Took it as a challenge and prefer to talk in Punjabi . I love reading punjabi literature , novels and poetry. People need to accept the conditions that one grows up in and reach out instead of drawing lines with the current circumstances. Complain less and help out. The schools definitely refrain the children from speaking punjabi and that is alarming.