Yes, that is what frederikvs probably means but access to the seed could become a new weakest link of ASLR. Presumably only available to CAP_SYS_ADMIN/uid 0, but it's worth a great deal of caution in designing the feature that allows determining what the seed was.

Further adding to that, the seed could be changed before that bug report was submitted. A dedicated tool with a FSM and minimal privileges does it. That lets us verify it strongly.