"Handle" could be "take down tweets on request of the Biden team without review" or "handle this request by the Biden team by considering our current policies and making an independent decision".

Neither would be terribly surprising to me, although for sure the first is more damning. But Taibbi hasn't yet provided enough detail to know one way or another.

If it is just "prioritize this support request by a VIP" it's not particularly damning or even scandalous, I would assume that would be the case at any social media company.