Poison is considered a Chaos dot debuff for Dark Effigy but not Contagion

Current:
Dark Effigy attacks enemies with Poison but Contagion doesn't spread Poison. Both skills use the same wording how they act.

Expected:
Contagion should spread Poison or Dark Effigy should't attack poisoned enemies

Note:
According to the wording, Poison can be considered a Debuff, in which case all Ailments are Debuffs?

Gem Links:
Chaos Bolt - Envenom - Comorbidity
Dark Effigy - Arcane Tempo - Acceleration
Contagion - Magnified Effect - Persistence


Dark Effigy tooltip:


Contagion tooltip:


Debuff tooltip:


Poison tooltip:


Proof (second Debuff is Withered):

Wanted to add on to this I was interested in testing +1 stacks of poison in the hope it would increase the projectiles Dark Effigy produced. It does not, I feel like this should work if Dark Effigy is indeed supposed to cast at poisoned targets.

Also, minion move command seems to cause Dark Effigy to move in random directions. (untested but maybe other totems too?)