I would argue that centralization is inherent in most humans instincts. To put it another way, many people like having a leader.
In fact people like leaders so much that exposed to a capricious and cruel world they'll invent imaginary and often cruel ones just to give the world a sense of order. Think the old testament God or lizard people conspiracy theories.
Given we're going to huge groups of people running around following leaders I think our best effort is spent trying to make the selection of those leaders pick non-evil people who run vaguely meritocratic and fair systems. Rather than trying to engineer ideal de-centralized systems _which will also have to be robust against the mob following their evil leaders.
Obviously this is a false dichotomy and we can do both, but please don't give up on good leadership, people need it and there's plenty of examples of it exiting.