Her show used to be (still is?) aired in the UK and she is well-known but I don't think she had anything to do with people latching on to LN. She is certainly a troublesome part of this story but, for the UK, I don't think she is that important.
I didn't watch LN or follow the media coverage closely here in the UK. But so many people regard it as the 'proof' of Michael's guilt. Oprah never gets referenced; at least, I haven't seen it. I think for many people it goes, '1994 settlement
LN = bingo! He's guilty'. So many people reference LN as confirmation of what they
already believed. Which I think is why I see the 'p' word in the UK media used with no caveats.
Of course there are hopeful signs. R2 did start to play his music again. The musical is coming to London. I'm not saying it's 100% hopeless. But there is a solid core of people, imo, who totally believe that Michael is guilty. And that might not matter too much except
some of those people are in the media which means they can provide a low-key but steady drip-drip of the idea that he is, in fact, guilty.
As for people 'doing the research', for someone who believes LN, I don't think they think there is anything more to be said or to find out.
I'm glad that Germany took a more thoughtful approach to the tv programme. France was good, also. There was that round table debate that Hector Barjot was part of, that was good. I have no idea if we had anything like that in the UK but, if so, it hasn't popped up on YT.
I see this in the UK. It's not a case of debate being closed down, it's more that there is no debate to be had, they don't think it's even needed. They think he's guilty and the 'proof' is there so there really is nothing more to be said. I'm not saying this view dominates the entire UK, not at all, but it does feel deeply entrenched to me. It doesn't stop the musical from coming to the West End and I'm sure it'll be a big success but that shadow is in the background and it's not a minor thing that can be ignored completely. Not imo, anyway.