I wouldn't make a judgement about what any other woman should find intimidating or not. So Sandie doesn't come into it for me, other than knowing she had every right to complain.
However, seeing Upton in court did not make me think for a second that he passes as a woman.
Seeing how Kate (most of all) and several other witnesses (to a lesser degree) both fawned over him and recited TWAW as if they were making a pledge - that was scary and brings home how widespread and dangerous the situation is.
Also, HEARING everyone misgender him at some point, and in particular hearing Kate Searle misgender him in very short order after she realised one of his lies (he said she instructed him to use F CR, which she disputes) - that brought home to me that the widespread fawning is due to #BeKind I think, and not due to really considering him a woman in the way he describes. And if he stops deserving kindness, well, he loses a bit of his token womaninity!
My bet would be that Kate Searle is reeling right now, and will be a mixture of furious and confused and feeling extremely foolish for a long time. I doubt she really does still have faith in DU but she has come so far down the line, she has to keep that part of her story straight to try to retain at least some credibility, I think.