It's said to defeat an Edo you have to hit so hard they can't regenerate (or something like that) or seal. Since the Edo has a soul, and Humam Path rips souls out, would it also be considered a Sealing Technique?
I don't think Human Path is a sealing tech by itself. I think Naraka Path is needed to store the souls if they are to be kept safe or retrieved later. Kabuto said something along these lines when he was using Nagato to pwn Naruto and Bee. So Human has mind reading and efficient removal of souls, while Naraka can only do it slowly, but is able to store them. In coalition the two paths form a sealing tech.