It is unfortunate that the CAG's report is being used to attack the CAG (whoever that is) personally. It takes some courage to be honest, esp in GOI (and in most other Gxxxxs) - and NO courage of any sort to throw poo. If people can get the actual report (and it is linked above, 73 pages of it), people also have all the freedom they need to study what it says, and debate individual points on their merits. BRF many years ago used to do such things. An example relevant to the LCA is posted here:
The LCA: With All Due Respect to the Naysayers…
Narayanan Komerath Bharat-Rakshak Monitor 3.5 Mar-Apr. 2001
The prevailing caterwauling about Cost Overrun, Foreign Components, Stealth, blah blah blah were each systematically analyzed and demolished with logical argument. Like water flowing over a village, only the poo now re-surfaces, not all the valuable facts and argument which remain buried. I see that the link does not work anymore, which is a great pity!
In those days people at BRF apparently went to the trouble of actually distilling the knowledge in hajaar-hajaar posts and other sources, and developing systematic arguments.
Which goes far beyond the present 'expertise' of parroting Official Statements from Blue Suits and Corporate Propaganda or jumping up and down in response to something misreported by some arithmetic-illiterate zero-watt papparazzi or corrupt Retired Military/IAS/IFS Aphsar.
So there are 53 points. Can they be extracted and listed? And dissected one by one?
It is no secret that the LCA is hobbled by dependence on a now-30-year-old engine. So at least in that respect, I would say that the LCA's thrust-to-weight ratio is very far behind the leading edge of today's capabilities, and will continue to keep going backwards as technology advances.
Which is why I say that at least there, the best, albeit somewhat daring, approach would be to buy the GE F136, lock stock and barrel, buy/build 100 engines. Some manufacturing technology will remain secret, but given the actual hardware in one's hands, it is not impossible to figure out what R&D to undertake (on a War Phooting Using Mark-IV Snail Pace) and whip Indian universities / corporate R&D into shape to improve Indian engine technology.
I feel that today relations with the US are sufficiently good to swing this deal and overcome ITAR issues. Such a project will also be a breath of life to industry say in Cincinnati, OH - and may instill oxygen into the ruling party's hopes for the next election. IMO this can be merged into a deal to sell several LCAs to the US in a barter deal - after all the flight control system was developed with US collaboration until 1998, and the integration of the F404 engine implies that much is already known about the LCA's insides, in the US. So it is already an India-US collaboration here. Why not take it to the next level?
(For those jumping up and down: The US always has had at least a small Aggressor Squadron equipped with phoren planes that they might encounter, to challenge and train their line pilots. The pilots of the Aggressor Squadron are probably among the very best in the US. So extending this to integrate a whole set of planes is not so new a concept. After all, the Harriers were imported and modified in the US as well. Why not the LCA?)
As discussed elsewhere, these are interesting times with creative solutions for developing high-cost military systems. The US may well see the sense of an F-136-equipped USLCA @ 1/6 to 1/4 the unit cost of an F-35 but without Stealth, as a nice complement to the F-35. Who knows? It may lead to the import of a very FEW F-35s later to complement the Indian Navy / North-Northeast high altitude stations. Stealth is definitely good for a Naval version. It will certainly lead to seamless integration of US and Indian weapons where desired by both nations.
The LCA program has great technology. But the political management above that seems to be stuck at 1950s levels. In any event, attacking people who tell the truth should not be acceptable.
And there is no denying that an airplane equipped with F-404 (de-rated or otherwise) is not going to have the T/W ratio of the same airplane with a modern engine. There have been huge strides in engine technology since the F-404 was developed (de-rated or otherwise). A big one is in T/W because of counter-rotating stages. Others are not so evident, but are crucial - they are in engine CONTROL technology and surge/stall suppression. These are the critical aspects in combat.
Can these things be developed in India? My guess is that an Indian version near-term, won't have the same TSFC or T/W, and certainly won't come close in MTBF. So it will require many more people-hours to maintain - but the cost of that is only 1/4 to 1/10 what it is in the US. So the optimization calculation produces very different results.
What if the US says

to all this? Why would the US buy Indian airframes rather than, say, Polish or Botswanan or British or Swedish? I can't say. But in that case, the smart approach is to buy Russian engines, build them. BUT STILL, set Archimedes-type expectations on Indian universities and corporate R&D to come up with India-Genius technology solutions to improve Indian engines.