Worst of all, they're right
The power behind extreme fundamentalists, both Muslim & Christian, is that they’re right about moral decay. Though wrong about much else, they enjoy popular following by having correctly identified a problem.
You can define moral decay broadly as “Percentage of TV shows I won’t let my 5-year-old watch.” Currently about 90%, up from about 40% fifteen years ago, and 10% thirty years ago.
Most things you won’t let your toddler do are things you shouldn’t be doing yourself. Think about it.