Elon Musk never did the "general amnesty" for accounts that were unfairly banned.

Why not?

With how close the FBI was working with Twitter, there are probably a bunch of "preservation orders" paired with "gag orders" for large swaths of accounts.

A preservation order means he legally isn't allowed to unban accounts affected by the order.
A gag order means he cannot tell us that there are preservation orders.
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