The canonical case is the Laughing Man. Aoi walks away. Later people use the same identity-template. Investigators look for a commander.
The copies are not descended from Aoi. They are descended from the iconography, the broadcast, and the coverage. That is a copying chain to a public template. The first of the four absences is "no causal copying chain from any original." The original doing the work here is the template, not the man who left.
If the test only checks descent from Aoi, any meme whose first user disappeared counts. That is copycat crime with a missing founder.
Then the original the test is supposed to find is the template, not the person.
The page says copying templates is already mimetic, and that this diagnosis is for the leftover: people independently producing compatible behavior because the same incentives pull it out of each of them. Putting on the Laughing Man identity-template is not independent production. It is using the available mask.
Read the show as mimetic copying of a media object, plus a first actor who left. The four absences do not all hold. "No copying chain" fails.
A different cut, same section.
Several of the most prominent appearances were staged by the original target's allies to muddy who did it. That is an organised plan: shared purpose, a command structure, the conspiracy cell in the table.
Mixed cases are allowed. A mixed canonical case cannot be the clean picture of four absences. It is a picture of why investigators get confused. Confusion is not the mechanism.