Here we are in the 70's when everything really is horrible and it really stinks. The mass media, everything on television everything everywhere is just rotten. You know it's just really boring and really evil, ugly and worse.
So I'm not really quite sure what Landis' plans were to make another one. The American Werewolf in Paris was a completely separate story.
No man is excluded from calling upon God, the gate of salvation is set open unto all men: neither is there any other thing which keepeth us back from entering in, save only our own unbelief.