You're either misremembering or misunderstood something, or I'm not understanding what you mean, because Mentour Pilot literally has a channel with nothing but air crash investigation videos: https://youtube.com/@mentourpilot

He has one of the best air crash investigation journalists, Kyra Dempsey (aka Admiral Cloudberg) as one of the writers on the channel.

They already have a YouTube Short listing the facts of the crash, and also have a longer video about the Jeju one. Only the facts, no speculation - they're waiting for the preliminary or even final report to make a full in depth video on it.