Nothing particularly interesting seems to have actually happened. Some posts got onto the Dashboard, which was still running. In fact, everything was still working just fine.
Script kiddies found a small crack and went for it.
Who cares about the quality or the skill it took? If it's an unskilled attack, it's even worse. If script kiddies can break into your site, your security is alarmingly poor.
The things that matter during an attack: how much damage was caused, what kind of data was compromised, and how much it will cost to get things fixed. The quality of the attack is only a factor when it comes to cost/benefit of fixing the vulnerability.