Some VPN providers run their servers without hard drives.

Thank god their servers aren't on a network where they could simply send the log entries to a different server.

That's a cute idea, but it won't get them out of complying with a warrant.

Yeah, that seems more a mechanism to prevent forensics analysis of a hard disk to retrieve transient logs that might've been briefly written to disk (?). I hope it isn't being as a means to prevent the means to log for future connections, for the reasons you state.