Maybe the WAPO thinks that this will stop the release of the bank records. There must be a whole treasure trove of info in Fusion GPS’s account.
Pure speculation on my part:
The republican’s have subpoenaed the bank records. I feel this is definitely a republican negotiation/settlement.
I think Fusion offered up Clinton to stop them from forcing the bank record issue. The deep state, thinking we are idiots and excited to hear that this was Clinton, have thus protected Bush, McCain, Comey, etc.