I would expect state actors to have gone for a lot more damage than "make Twitter look stupid". Also, all the high-profile state actor hacks I'm aware of were a lot more clandestine - it was months before they were discovered. State actors are highly professional, they're in it for the long haul, and they do serious damage.

The "massive blast radius" of this hack lies more in the damage it could have done, rather than the damage it actually did. This amateur execution makes me think it was some small-time cyber criminal who happened to have the bright idea of bribing a Twitter employee, but didn't have the know-how/creativity/patience to reap its full benefits.