The person you are responding to didn’t make a first amendment argument, or say anything about the US.
They are saying that people outside of China should take a stand against China’s lack of respect for speech rights, rather than playing along with it for profit.
The USG doesn't respect speech rights of it's citizens either so idk where this grandstanding keeps coming from that we're still the champion of free speech when every night police beat and pepper spray people for exercising those rights.
That is also a problem — however it is neither related, nor diminishes the significance of the topic at hand. And the suggestion that the USG and CCP’s respect for speech rights are somehow comparable is just silly.
All of the western world has a significantly better respect for speech rights than the CCP does.
They are saying that people outside of China should take a stand against China’s lack of respect for speech rights, rather than playing along with it for profit.