You have to read the whole argument, to get past "Full-disk encryption achieves the same end" where they're equating the encrypted-on-disk with ephemeral RAM.

You have to read the whole argument, to get past "Full-disk encryption achieves the same end" where they're equating the encrypted-on-disk with ephemeral RAM. Only once you get to a later claim that the logs they store on local disk "contain no personal information" (they claim; even in event of error?) is the earlier claim arguable for a relevant threat model.