I agree. Moldbug equivocates between two instances of 'power' (hard power vs. soft power, i.e. political influence) which have very different properties. Moreover, he misrepresents the purpose of civil disobedience. Civil disobedience can create hard power where none existed before, as well as increase a group's political influence by acting as a coordination mechanism. He suggests that civil right activists would have had "hard power" over their opponents, even absent their political activism; but this is simply untenable.
Suggesting that "elite Universalist/Progressive opinion changed, and this is why Dr. King's activism was successful" is circular. In fact, shifts in public opinion (even among so-called "elites") are part of the political process, and influenced by political factors.
http://unqualified-reservations.blogspot.com/2013/01/noam-chomsky-killed-aaron-swartz.html
Summary: Moldbug on the Aaron Schwartz affair. Power is a very real thing with real consequences for activists, yet many people don't understand the nature of power in modern times. People like Noam Chomsky get great fame doing bad epistomology about who has power, and as a result do great harm to idealistic nerds who don't read between the lines to selectively target their attacks at weak institutions (Exxon, Pentagon) instead of strong ones (State, academica incl. MIT).
Here he returns to a theme that is one of his real contributions to blogospheric political thought: that victory in political competitions provides Bayesian information about who has power and who doesn't. If your worldview has the underdog somehow systematically beating the overdog, your epistemology is simply wrong - in the same way, and to the same extent, as a geocentrist who has to keep adding epicycles to account for anomalous observations.
This means that activists like King, Schwartz, and Assange are only effective in bullying the weak, not standing up to the strong (despite conventional narratives that misassign strengths to institutions). When such activists stop following the script, and naively use the same tactics to attack strong institutions, reality reasserts itself quite forcefully: