Mastodon does not have content promotion. It’s more analogous to the air that transmits your voice than a theater stage.

Nope. Air is static and no one has to pay to keep it there. A mastodon server is private property, and needs maintenance and money to stay on. You cannot force a private entity to host your speech. They always have a choice.

Mastodon is a federated service, like e-mail. Would you use an e-mail server where the admin reads messages delivered to your inbox and deletes the ones they don’t like?

Mastodon is exactly like email. Try running a nazi newsletter off of Gmail and see what happens.

Gmail, maybe. There are a plenty of providers that respect your privacy and don’t read your e-mails.

Also, I’d like to see if anyone has ever been banned from Gmail for sending an e-mail saying that hating all men is not nice.

Uh, you mean like a spam filter? I would not use an e-mail service without one.

No. A spam filter still allows you to view the e-mails and reply to them if you want to.

Also, I would certainly not want an e-mail service where the spam filter is based on the admin’s political opinions.