It's kind of fascinating to watch these conversations unfold, because you can see in real time what hoops people have had to jump through to make the phrase have value when it clearly, on its face, doesn't carry that value.
It's one of those phrases that people eventually understand to mean something useful, but where that meaning isn't communicated by the phrase itself. People continue to propagate it because it's the "handle" they have for that idea, and they think that because they now have a meaning associated with it, that will make the words magically communicate said meaning to the person they're speaking to.
