I think Taj’s latest update was either on MJCast or his YouTube channel: he said that all the Jacksons (Including Janet) are tied from releasing any of their own products until the biopic is released, according to the Estate.
This is not aimed at you in particular, but I genuinely think Taj has just been in a series of unfortunate events that have affected the documentary series’ production, with the pandemic, his father’s passing, the extended biopic production preventing release, etc. Have been following the project updates closely (mostly limited to his YouTube channel, project page, and MJCast, which might be part of the problem); he has knowledgeable people behind it and aiming for a timeless record of Michael’s story, and seems genuinely invested in creating something that his “uncle would be proud of”, as he said they both shared love of filmmaking. The skepticism of release is fair, but some fans (not anyone here afaik) take it too far.