It is a fine statement and serves the purpose of keeping the pot boiling. There are plenty who will be calling for HC’s resignation in a short time.
It also rightly points out that there is NO way The Disaster could have been ignorant of the security situation there not even if he missed half or more of the daily security briefing. Thus, it confirms his utter lack of judgment or outright treason.
This statement brushes Hillary aside to concentrate on the real issue, her boss.
You make a good point that it keeps the issue going but I still think the statement is weak