Worth considering the history: Petr proposed the general idea of a
criterion as part of the criteria review, and I drafted the final
wording. See thread "New criterion for Memory test" from end of
January.
Thanks for finding that thread. We have to find a way how to link criteria with list
discussions, so that it would be much easier to read all relevant discussion to a
particular criterion. Putting that into my todo list (page 937).
The thread indicates the criterion was created ad-hoc, "the tool is there, let's
codify it". Since we try to be more conservative about what is and what is not a
blocker lately, I think this is a good candidate for removal.