No, didn't work for me open OpenWRT x64 running in a container but that is probably 'cause I'm using dropbear instead of openssh-server. That's what OpenWRT uses by default so the impact there will be minimal assuming that most installations don't change to openssh-server - it isn't installed by default.

On top of OpenWRT on my router (running 25.12) running dropbear instead of openssh-server, I also do not have any accounts in /etc/passwd|/etc/shadow with "*" for a password hash and an actual shell (all are set to /bin/false).