I wouldn't say it's disingenuous... given that there's nothing legally preventing mainland-Chinese from choosing to live in HK, and then being quoted as people who want "their" city back.
Odd to think, but HK is now experiencing a real Red Scare, the likes of which the US only ever imagined in the depths of paranoid delusion. There are real (CCP) Communists, living amongst the HK citizenry, nudging HK's democracy (such as it is) toward their agenda by appearing to stand for "public sentiment"!