No.
The feat you described is the person being consumed and vanishing. This visually demonstrates BFR and potentially Absorption. The person has been removed from the fight and is now inside the void.
You have not shown that the person has ceased to exist on all levels (body, mind, soul, concept, etc.). They could simply be trapped inside the void, being digested, or held in a pocket dimension. Visually disappearing is not the same as being erased from existence.
This could be:
1. BFR
2. Absorption
3. Transmutation/Deconstruction(The person is being converted into something else. Maybe they're turned into pure energy, or their matter is deconstructed at a molecular or atomic level. Visually, this would look like vanishing, especially if it happens instantly)