A child entering this prompt is probably expecting one thing, but the internet is filled with pictures of another nature. There are possibly more adult 'my little pony' images than screenshots of the show on the internet.
Did the researchers manage to filter out these images before training? Or is the model aware of both 'kinds' of 'my little pony' images? If the researchers aren't sure they got rid of all of the adult content, then there's really no way to guarantee the model isn't about to ruin some oblivious person's day.
So then, do you require people generating images to be intricately familiar with the training dataset? Or do you attempt to prevent any kind of surprise like this by just blocking 'unexpected' interactions like this?