Tau Tau:
You're right that the Tau Chain might not be entirely doable apart from centralization. One of the concerns would be whether or not it is blockchain enough, as in decentralized enough, and specifically in regards to excessive amounts of backdoors, remote access, overriding protocols, the ability to modify the code, the system, etc.
Backdoor Access
Well, technically, any amount of backdoor access is dangerous as it centralizes the system, the blockchain, etc. For example, Apple, Microsoft, etc, do backdoor things all of the time. I understand the principles. I only know some code. So, I'm no expert.
Bit Torrent
I like how Bitcoin works. I like how Steemit is working. I like IPFS, Bit Torrent, P2P, Ubuntu, etc. I'm not sure how I feel about Dlive because I've heard rumors that people have been banned off it. But I've not confirmed those reports.
Dlive
But if they're true, that's too bad for Dlive. So, I'm not sure where Tau would land in that debate. Would Tau ban people like Twitter? YouTube banned at least four of my channels, meaning thousands of videos that goes back to 1996. I'm not happy about losing three decades of videos. I didn't lose everything but I lost dozens of hours of videos or more.