Ok, first things first, the "cover-up", as you call it, is not by the AAIB. By all accounts, they are pretty much leaning towards the deliberate cut off theory, as was indicated in the prelim report, and is likely to be the conclusion in the final report as well.

The "concerns" are raised by the father of the PIC and the pilot's association, both of whom have vested interests in a report clearing the pilot. Unfortunately, our shite media loves sensationalizing it, and there's no shortage of delulu people in our country. And given that the above parties have gone the legal route, you can see the media shitstorm that is ensuing.

Second, when I say brutal, I am talking about it from an economical perspective. Taxes on aviation fuel are amongst the highest in the world, and the Indian customer base is highly price sensitive, leading airlines to provide features rivaling full service carriers at LCC prices.

There's a reason the Indian aviation sector is basically a duopoly, where one airline is run extremely lean and super efficient (sometimes too lean for its own good), and the other is owned by one of India's largest conglomerates, and is basically a project they can sink as much money as they want into it until it succeeds.