Matt Taibbi just makes stupid stuff up. None of the messages say what he claims they say.
The purported exposé of Twitter’s political bias is itself an attempt to weaponize control of Twitter for political purposes.
nymag.com
So why is he doing it? Because he's a partisan hack, and he gets paid well to create propaganda.
The goal here is to justify the ongoing consevative censorship crusade, as currently highlighted by "I'M BANNING EVERY LIBERAL FOR BEING A LIBERAL" Elon Musk, or by "I'LL MAKE IT A FEDERAL CRIME TO FACT CHECK" Donald Trump.
Needless to say, many conservatives are thrilled to see Taibbi lie, because their lives are dedicated to censorship. That's how fascists roll.