Anonymity has costs, so if your preferred version of privacy is "no one can tie...

Anonymity has costs, so if your preferred version of privacy is "no one can tie me to my real world persona" then you have a much, much, much harder job of creating a system of trust that doesn't appeal to real world institutions. For example, I want to maintain my privacy and participate in OSS financial software. It should be much, much harder for me to convince people to become a core contributor.