This was written in a private chat and later picked up on social media and afterwards it became news. Apparently such big news that BBC posted it as well.
Moreover I do not agree with your view of Muslim women ceasing to be Muslim if they do not wear a hijab. In such a case millions of people in your own country, Pakistan, are not really Muslim.
I have seen many photos of Pakistan women in public in Pakistan who do not wear any headscarfs.
You should refrain from such bombastic comments as the ratio of women wearing headscarfs in KSA, Arab world and Middle East is significantly higher than the one in South Asia. Yet I would not make such a bold claim that millions of South Asian Muslim women who do not wear a hijab, are non-Muslim.