Well, the web (which is already decentralised) isn't like that.
Ironically, his blog is not hosted by these social media firms he praises so effusively. It's self-hosted on OVH and uses a privacy guard on WhoIs data. Apparently he wants to benefit from the web's decentralisation whilst preaching against it. This type of hypocrisy seems very common amongst those who rail against imaginary dog-whistle enemies like "Nazis" (of whom there are virtually none in today's world).
Actually, they're quite a few, but you'd have to get more into prison culture to see them.
Remember all the things Snowden and Assange bring back to light? first, with centralized control, it would never be possible to go against "the men". Second, that they describe how under Obama, you know that guy everybody likes and thinks do everything for the good of the mankind? the peace nobel prize? the first black president of US? how can he do wrong right?
And yet there was a lot of shady things going under his government, like spying its own people to resort absolute control under this "above good and evil" figure in a country who worship celebrities and big money (the winners).
My point being, its doesnt even need to be a nazi state, and can be a facade "rainbows and unicorns" kind of government, that do a good job into making people think everything is good, and their leader is some sort of Gandhi, that the real show, the nasty one, the one that even resemble the nazis, can happen behind the curtains.
Nature itself is all about decentralization and development in a organic way and its the most resilient system we are aware of.
The only way to stop the nazists (or stalinists) of the future is by not letting all the eggs in one basket.
And yet, we should embrace it, and learn from it instead.