I do not understand how you can make content that looks like YouTube, but decentralized? I do not think that such content is possible for ordinary users on computers? It is not productive. Can the term "decentralization" mean something else?
Have you heard anything about p2p networks? BitTorrent protocol?
Here, a little bit different technology is obtained in my opinion.
No, the technology is just the same. Simply here One technology is embedded in another, and in the aggregate, a completely new file system is obtained. Live, if you can call it that.