I think anonymity is important for some kind of coordination problems (e.g. against an authoritarian government). A better solution is to have a nominal fee, maybe $10/yr to be platformed, that way it's expensive to bot.
Well, the issue with coordination is you need everyone already there to coordinate. If people are only using the network for illegitimate uses, then it will get shut down (think 4chan, Silk Road). Really, it's in the authoritarian government's best interest (not the people's) to make multiple platforms. Most people will choose the free one, so it's 10–100x cheaper to either bot the pay-for-anonymity platform or shut it down when they notice it formenting unrest.
