not speculation, note that these are just some of the cases that have surfaced and got to the media.

"In India's citizenship test, a spelling error can ruin a family" https://economictimes.indiatimes.com/news/politics-and-natio...

"Ex-Soldier Declared "Foreigner" In Assam Released From Detention Centre" https://www.ndtv.com/india-news/mohammad-sanaullah-former-so...