> Fortunately binary logging can be switched off This is not switching them off. It is having the binary logs mirrored to text logs: > […] by letting systemd

> Fortunately binary logging can be switched off This is not switching them off. It is having the binary logs mirrored to text logs: > […] by letting systemd forward all messages via the socket /run/systemd/journal/syslog. So now you have two copies of the same information.