[mmt]

Log rotation isn't just about disk space

I disagree, since, otherwise, there's nothing rotary. If one has effectively infinite disk space, nothing ever gets "rotated out," for example.

Certainly, log segmentation provides benefits beyond being a prerequisite to rotation, but, as you point out, it's a common default configuration. An inbuilt feature of syslog-ng is log file naming based on date, obviating any post-processing.