@astraleureka I think this is a feature designed for use cases where you'd get a VM-image as an "appliance" from a vendor. There it is common that you don't get the login credentials or it'll be out of support.
And well, people started to just edit the kernel cmdline in grub because of this...
Also is using a drop-in file within /etc/ssh/sshd_conf.d/ no longer (also) a supported way?