Politics play a huge role there. Everybody wants a bigger pie of minority votes.
Politics of church funds and church appeasement for demographic support. Same in north east also.
I would like to also bring some light also to the extent of the problem.
It is an assessment by a few of my old IAS student mates in my freelancing days.
One of their friend, who was a constable in police, went to catch some Satan Worshippers (you know the devil worshippers).
This constable guy along with his team went to catch them after getting tip off from center that some anti-social activities were going on in their jurisdiction.
When they went, it was one of those evil night retarded fancy dressed groupie going on.
They were not scared then, but when they found out the guys in it, they got scared and left - they were top seniors in police and top court advocates and judges.
Mostly VIPs in power.
Obviously we are not stupid to believe in all the religions angle to it, but we came to conclusion that is actually a spy ring of western nations, with religion as its cover to get weak character ambitious people to follow blindly (probably after some blackmail after joining).
Anyway, we think this came into being in Kerala after Nambi Narayanan was framed by CIA using their puppets in Kerala, and the next govt was patronized by USA. So I think the new govt then allowed these groups to take roots in kerala, for grooming for future use.
Right now I think whole Kerala politicians (left and center and to some extent right also) maybe part of this anti-social trojen ring. Because we get news of this kind of activites constantly. Recently a few movie was made in Kerala with Satan Worship in its context - Adam John and Lucifier.