"Script kiddies" got their name because 20 years ago any kid could download some code and create a DDoS attack by running a pre-written script. Ransomware hacks seem a bit more sophisticated, even with today's highly modular malware. I think it is an interesting proposal: a fake attack as shown by the disparity in savvy between the attack and the payment, or a really dumb screw up.
EDIT: as "koheripbal" says below, maybe their tumbler is a boob (paraphrased).