Nope the movie horror world was run by the christian elite. Horror was used to hit home christian values and big tits and sexy bodies and clothes were punished.
It's a very partial or biased truth, but you are not wrong, but maybe the tealire is more complicated.
-The moralistic use of fiction is very old and it even precedes Christianity itself!
The Greek tragedies were about the simple idea of what happened when a man or woman tried to escape from the inevitable destiny (i.e, Oedipus will kill his father and get married to his mother, the attempts to avoid it will only nmak it worse).
The Greek comedies were very moralistic too... They mostly mocked the "outsiders" who didn't fit into the desired ways of being.
Those are pre-Christian examples.
-The Victorian melodrama was always very moralistic... And it has its roots in the medieval moralistic plays. The morale of the story always had a tendency to preserve the Status Quo, but this was not limited to Religion and it often included secular problems, specially the idea that a person who belongs to the lower class and ascends to the high class will be punished by catastrophic events.
-The horror genre always had a moralistic message. Shelley's Frankenstein has been mentioned and it's a good example (i.e, the same logic of the Greek tragedy... A scientist can't violate the laws of God -death- because the only result will be disgrace).
... But this was not specifically a "plan" of any Christian Church. Actually, the Hays Code (of censorship) was an explicit intervention of the Church and its idea was not that the "sexy bodies" and "sexy clothes" had to be punished in the fiction... But actually that they could not even be screened at all.
You are not wrong, but the reality is a bit more intricate and it doesn't really involve a "Christian elite", but very normal people or even the society as a whole. I.e, when God Browning filmed "Freaks", he followed
some rules: the "sexy girl" who wanted to use her sexuality as to move from the lower class to the high class got punished... But the Freaks, the real outsiders, the monsters finally won... The audience and the critics didn't forgive this "sin" and the movie became a disgrace for Browning's reputation (even if history later made him a legend due to this transgression).