TL;DR: OpenSSH has since version 9.0 PQC kx enabled. Use it!

You might want to check the key exchange algos for SSH, if you had hardened them on the client or server side like years back -- unless you want your ssh sessions be vulnerable to "store now, decrypt later" attacks .

Only newer #OpenSSH clients (>10.1) issue a warning if the kx is not #PQC safe.

https://www.openssh.org/pq.html

(ssh -v , look for "kex: algorithm ")