You would think given the situation they'd say "no comment". It's incumbent on China given that they violated US airspace to not make the situation worse. They have to know that it is an impossible situation for the US to back down in. They're basically ensuring we get locked into an escalation cycle.

Edit: And by loosening their censorship on nationalist commentators to say incendiary things means neither side has any room to maneuver. It's like adding in dynamite.