Why is it strange? To me, it could only be strange if one was considering that someone planned this, and then yes, it's hard to come up with anyone who would benefit from this. OpenAI looks dumb, but also their models sound impressive, Chinese models look dangerous, but also useful. No clear winner.

Thing is, I don't think anyone planned this, so to me the timing isn't strange at all. The models really were getting close to being able to have a big cybersecurity impact (I started seeing that after teams were reporting their Mythos usage), and an event like this is not so surprising, given that.