Musk's destruction of Twitter is a good example of how hierarchical power structures are actually quite fragile, contrary to what is usually claimed. Because all power is concentrated at the top, a failure at that point causes a failure cascade in the entire system.
This is why every vanguardist project fails. Not only is it nearly impossible to find some perfect human being who can properly wield power to sit at the top of your pyramidal structure, but also one day they will die and be replaced with someone almost assuredly more mediocre.
Every time a vanguardist makes excuses as to why their "workers' state" deteriorated, they blame one or another figure who replaced their glorious figurehead. But that's precisely the point. Your authoritarian holy figure will one day die. And then what?