If you listened to the interview, he did not hack into the system. The action of hacking only happens when a security wall EXISTS and you have to trick your way into the system. This guy did NOT have to do that.
Reading your post makes me wonder if this is part of the single-payer initiative. They didn’t bother to even draft security because they didn’t expect the software to be up for very long, it was only a show, and complete exposure of everyone’s information could then be used in calls to “simplify” and avoid exposure in the future by “eliminating” the need to have to supply personal information like this by granting everyone singlepayer (i.e., the government already has information on you so why not the government handle your healthcare?)