Ignore the haters. This was an enjoyable documentary-drama meant to entertain. Let's agree to that. Yes there were some conspiracy theories, which I found some unlikely. However even the conspiracies weren't far-fetched and whacky like as if the plane got zapped by an alien UFO or entered a wormhole.
Yes, they probably should have interviewed actual pilots as part of the expert panel. But these critic reviewers act as if they know what happened to the plane, but how many of them have spent even a day researching and due-diligence? In the end, nobody has the answer to what truly happened, just a best guess.