I wasn't even a fan at that point ( I mean I was but that was around the Off the Wall and Thriller time but I was a child then and it wore off), I just watched LN out of interest then felt the disgust that you still feel now.
I've changed my mind due to many many things, too many to even remember but my stepson (in his 30's now) was always a fan and we used to argue after LN ( me and him never argue about anything except we did about MJ, he insisted that he was innocent and I insisted he was guilty) and at some point I can't even explain it, I just opened my mind to what he was saying (I didn't admit it to stepson for ages) I then went down the MJ rabbit hole and the penny dropped that he had been framed by the power structures within the industry.
That wasn't even my stepson's argument btw, that was what I felt had happened.
The industry mafia who own the media just did not want him around for many many reasons, he was an enemy of the powers who ran the fame industry at the time, he spoke up against them and his message was not a narrative that they wanted out there.
They shut him down in any way they could so that nobody was listening to him and they still do, because of money.