China is playing the exact same card that USA does. Microsoft (willingly or not) have been playing ball with the 3-letter-agencies (3LA) to keep vulnerabilities secret and to the 3LA's advantage. If USA is going to 'cry wolf' on Huawei, then it is fair game that RPC will 'cry wolf' on Microsoft (and/or Cisco, and/or Oracle, and/or pick-your-own-company).