What do you mean "produce"? They were produced while it was running, they can be found in /var/log/journal
> If you broke the system and it won't boot, you'll need to boot from systemd and check with journalctl because the journal can't be accessed otherwise.
Obviously? I'm not seeing the problem. It's not like you're getting anything from that system without having a way to mount your XFS/Ext4/BTRFS/LVM/luks/whatever setup. You need to boot a distro compatible with that to do it.
So of course you have to boot a Linux distro, which will easily have all the tooling available, including to deal with the journald stuff.
It's just a complete non-problem.
> I like controlling my system instead of having it controlled for me, thanks.
I'm not sure what that means exactly.