I'm not surprised. They have rules and guidelines in animated cartoons as well, that come from commitees made up from parents who want to insure the sanity of what children will see.
For exemple:
- No skull heads (like on a poison bottle for instance)
- No objects with sharp edges
- no navels on the characters
- Fire must be blue instead of yellow or red
- All characters in a vehicle must wear a seat belt !
... Excepted when they're driving with their feet using a bazooka to blast ennemies.
Cause of course those ridiculous rules apply as well (or mostly) for series that contain the more action / explosion / weapons etc...
Hypocrisis at its top.