From the article:

So I understand in an environment where the powerful act with impunity either because they can hide behind large institutions or because their communications and deliberations are placed off limits it’s tempting to level the playing field. The ring quite likely saved Bilbo’s life in The Hobbit, and (temporary) anonymity enabled Snowden to go public with his revelations. In fact, the anonymity of bitcoin creator “Satoshi Nakamoto” was necessary for its resilience and almost-impossible-to-replicate immaculate conception.

So this is not an argument that anonymity is *never* warranted, but that it should not be the default if you’re a regular person posting what you take to be interesting, true or important in the public square.