It's cherry-picked games and it doesn't compare to the "engine correlation" of other high ranked players against similar opponents. I would not rely on it as evidence that Hans is "clearly cheating."
She says that the ROI probability calculation is wrong, which is the last part of her video and a separate topic.
The part about correlations has not been retracted AFAIK. I agree that there's a need for a baseline though, there is one example on her recent twitter feed but more samples are needed to get a better picture.
No it's not. Just the probability calculation had a few flaws.
The string of 100% games, esp. in the few tournament games he needed a win, is decisive. Note that he played a lot of games in each tournament on the 70% level, to fool statistics.