Three points.
1) You seem to be comparing the dead demon consuming seal with itachi's totsuka. While they are both sealing techniques, they work entirely differently. Dead demon consuming seal rips the soul out of the body itself, thus killing the body and sealing the soul. So in the case of the dead demon consuming seal it does, in fact, both seal and kill the victim. The sword of totsuka works differently. Upon piecing the victim, it seals their body into a jar. Thus, the body, with soul fully intact, is sealed. Now depending on where the body was wounded by the sword may determine whether or not the sealed person is alive or dead. However, since Oro was laughing, I doubt it was a fatal wound.
2) You said since Itachi died, those sealed by his totsuka must also be dead. Just because Itachi died doesn't necessarily mean totsuka and yata are gone. We know that totsuka and yata mirror are legendary treasures. Who knows how they are actually obtained. It is conceivable that whomever has Itachi's corpse may be able to take them. Itachi may also have transferred them to Sasuke for all we know (they starred each other in the eye/eyes before death). Also, how do we know the person who controls totsuka can't simply empty the jar of sealed people? There just isn't enough evidence to say whomever is sealed by totsuka is also dead now.
3) As far as the insulting. I was referring to when you said "You people are making me sick." That is an insult no matter what mountain, valley, or plain you live on.