Decentralized telecommunication solutions such as webrtc, peer-to-peer communications have been well accepted not replacing but accommodating traditional centralized switching systems. Remember data communications once was considered as just a dreamland (and I was part of it) but nowadays people are using it without knowing it. Regarding centralizations/ de-centralizations, unfortunately this channel takes it personally (I would call it a slavery mentality) as mistakes people made decades ago in telecommunications industry (we used to believe phone calls have to go through a telecomm company). At end of the day, this world is moving forward regardless what you think and how much you are capable of understanding the ideas.
The most import thing about the web3.0 --- if world War 3 happened, and most of Server is fried, need only one running server to restore most of the information. Not likely to happen, but still a chance. I agreed with Dr. J mostly, but still a good idea to look from the other side. thanks for the great video.