I'm sure you're aware of the challenges of defining 'political bias' - usually people mean 'political views that conflict with mine', and what 'people' mean, LLMs learn.

Also, do you think Musk suddenly wants to be non-biased? Musk is openly, explicitly, and aggressively biased in favor of his views and against anything that conflicts with them. Wikipedia has a NPOV rule; Musk has a My Point of View rule.