It seems that your primary concern is that the government (or some bad actor) will be able to install a backdoor into PQC algorithms. Is that right? Why would PQC be more exposed to this type of subversion than existing public-key cryptography?
To your point about PQC being used exclusively, post-quantum encryption methods are designed to be resistant to both quantum and classical attacks. That is one of the key stated goals of the NIST post-quantum cryptography program.
To your point about PQC being used exclusively, post-quantum encryption methods are designed to be resistant to both quantum and classical attacks. That is one of the key stated goals of the NIST post-quantum cryptography program.