Was the Dyn DDoS attack actually a script kiddie v. PSN?

The massive DDoS attack that disrupted the internet address-lookup service Dyn last week was perhaps pulled off by a script kiddie targeting PlayStation Network and using Mirai malware to assemble a massive IoT botnet, according to research by Flashpoint.
“Flashpoint assesses with moderate confidence that the most recent Mirai attacks are likely connected to the English-language hacking forum community, specifically uses and reads of the forum “hackforums.net,” according to a