I think this is a pretty significant misreading. The basic argument of Yishan's thread (external to the 'all tech companies want to do is tech, not politics' angle which is honestly kinda tangential) is that social media is hard because it's social, not because it's media. The part you're pointing to is meant to develop this because it's a fundamentally social effect which causes both sides of the aisle to feel marginalized by the institution - something I think we can agree is pretty empirically true. All that's needed for the (increasingly accurate) predictions of Musk's difficulties piloting the ship to stick is the intractability of _calm social discourse_ in what Yishan is calling the new 'culture'. I don't think Twitter having a political bias is relevant there.