I cannot follow. I think you meant kmsg - and where else would you stuff messages when the filesystem isn't there yet?
I mean .. you have no / or /var yet, where do you send your log messages?
The whole reason for the bug report this angry GP wanted to share with us is that there was a buggy, wrong assert filling up the logs and causing issues during boot. It was literally just a bug. People can now form a mob and complain that their favorite init system never exposed a bug like that..
That's not related to
- logging to kmsg (that's okay, just don't kill it because you're doing stupid things)
- parsing the 'debug' kernel command line flag, the original complaint of the GP
Dunno if dumping the output of every last damn command performed by systemd, and the daemons it starts, into dmesg can be considered sane...