Self-censoring self-censorship
People who think pseudonyms are cowardly probably have no idea how much they subconsciously self-censor. They’re unaware how agent-arena relationship shapes and limits anything they say. To see what true freedom is like, you need to mask the agent in a familiar arena, or, move the agent to a foreign arena. Even someone with a pseudonym settles into a new agent-arena relationship, and needs to experiment with new pseudonyms and/or create new arenas with different constraints.