This doesn’t seem entirely accurate to me.
Most public platforms interacting with the Fediverse today does require you to register an email address out of practical considerations but this is not a requirement of the system in itself. It is possible to both post and read an unmoderated fediverse with enough effort.
If you don’t like the moderation of your particular server, you are fully able to create your own or set up an existing solution yourself that gives you 100% control over what kind of content you post, and in turn which content you federate to your server. Of course, you can’t control which servers decide to allow your content on their server, but any user of servers where your content is blocked can do the same and have access to your content again.
As far as privacy goes, you can rent servers and purchase domains with crypto currencies which are not traceable back to you where you can host your own service that interacts with the fediverse, making you 100% able to control the information you post into it.
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