My view as a Malayalee Hindu from Kerala:
This film is nothing but a majoritarian view of Kerala from the lens of North India. Yes - there is Islamic radicalism in Kerala. That is there across India. Even the data proves that IS recruits and terror cases are rampant across India with UP and TN topping the list of "reported" cases. Singling out Kerala just serves a political agenda :)
PS: I know it's hard to imagine for Non Malayalees, but Kerala has a strong regional identity among Malayalees. A Malayalee Muslim is very strongly connected to a Malayali Hindu unlike in most parts of India (barring TN).
The over-sensationalism surrounding Kerala and Islamic Radicalism is utterly unfounded.
If this film explained Islamic radicalism in India in general without hyping Kerala it would have made it more true to facts.