I see Taj's position. It's true, reviewers and naysayers would immediately call it a fluff piece designed to sanitize not just Michael but all involved in the 93 situation. And that's before even hitting play on the doc. Then having family at the forefront heightens that issue the more.
So, Taj's doc would probably benefit from being an independent/fan-funded piece that doesn't shy away from the fact it's family produced. Someone somewhere (at a corporate level) needs to help with the funding though because while it's generated a respectable amount it's not enough.
I do feel the Estate should produce a separate doc or docu-series of some sort. Maybe not to drop immediately, so as to not be in the mix of LN. But for release sometime this year to thematically tie-in with the "...a decade on from his death, Michael is still reigning" narrative.
Instead of taking an approach that's a "let's knock down every claim in LN and then roll the credits" they could build their rebuttal into a doc that re-affixes the focus on MJ's creative output and lasting impact. If I were them, I'd sandwich the rebuttals into a chapter/episode/or section of the doc that ties into Michael still being afflicted by vultures even in death. Because the more I think about it, the more difficult I see it'll be for them to actively be behind a doc that's sole purpose is to knockdown everything said in LN point by point. It'll only magnify attention on LN and almost make the Estate doc a companion piece to LN (for-MJ / anti-MJ), when in reality we want it to savvily extinguish LN altogether. Something I think they can do with a little distance from the broadcast.