I don't know, you're making a lot of assumptions based on... well, nothing much, really.
There wasn't a great hunt that anyone could've followed before Tennant, or Smith, or Capaldi, either. It was just people speculating, and then from the BBC the news. And that was that. Just like this time.
I have my doubts about her myself, but it feels like there's a lot of unfounded negativity here. You yourself usually tend to criticise people for being all negative without a basis.