He's just pandering to the lunatics in office. They're even quoting Vance, like he was a respectable and wise politician and not an insane puppet built by oligarchs and for oligarchs.
Oh, I trust he'd be pandering to the Harris administration too, if they were in office. It's true that antagonizing China has been a constant in US politics for a while now. It's just especially funny to see someone pretend to be concerned about the military threat of the CCP while glazing such a shamelessly warmongering government.