A couple things I know of related to her talk show: 1) She kind of ‘showed her true colors’ by being snarky and mean-spirited ("haha, it’s all just fun") towards many a guest, even making some cry or weirdly putting them on the spot when talking about a traumatic thing in their lives; 2) She was seemingly revealed to be a toxic a-hole behind the scenes to her staff and others. This is evidently not unique at all among talk show hosts, but paired with #1, it kind of sunk her reputation, it seemed to me.