That's not money released. That's approval only. Nowhere it is mentioned that the money got released.. As long as the money doesn't reach HAL.. the work won't start which you noted correctly and it is considered a delay however way it is phrased. My only gripe is why it is taking so many years to sign the deal when it could be done in less than 18 months like Rafale.
On Rafale deal, with regards to the original deal, IAF is not involved in money matters? So IAF just evaluated the wish list and govt would have bought it for IAF without IAF spending the money from IAF budget? HAL and Dassault can do all the negotiations they want and Trump can broker the negotiations as well but end of the day in a regular deal, the money would have to come out of IAF budget. We are all aware that the deal didn't materialize.
If you consider the modified reduced order, then govt bought the planes for IAF under G2G route but IAF didn't send any real objections that would cause the deal to slow down (done and dusted in 18 months including price negotiations). What stopped our AatmaNirbhar govt from doing a govt purchase of Tejas from HAL directly for IAF just like Rafale and what stopped IAF from finalizing the price within 18 months instead of resending MOD negotiated price back twice?
If govt and IAF can find a middle way to speed up Rafale contract signing, they can do the same for Tejas if they are really honest (not just sound bites). Yes, I am aware that the deal will be signed shortly (how shortly is anybody's guess) but this should have been signed in 2018 itself.
PS : i don't have subscription to Aviation Week article you linked.
DAC is not just about MoD. Ministry of Finance and Commerce along with Ministry of Law is involved in it. Approval of DAC means the finance gets released and every legal aspect of the deal is taken care of. You would not find anywhere mentioned as first installment has been released. So understand it first.
Coming to Rafale deal, IAF prepared the ASQR and after due permission from MoD where again DAC has been involved, RFI got published and subsequently RFP got released. Now how many numbers would be proccured in fly away condition, how many would be made under ToT is not a concern of IAF to start with. IAF was only concerned about what the deal is how much they have to pay & for what. Problem started in between HAL & Dassault which took its own sweet time. In that case it was the fault of MOD & DAC. It was their responsibility to mediate in between the two parties like what they did in case of Tejas. It was not a job of IAF to mediate in between Dassault & HAL.
Now coming to your concern on Tejas, you simply can't compare it with Rafale or the upcoming MRCA 2.0. When MMRCA RFI was created, it was created with certain requirement in mind. IAF was clear about what kind of platform they want & for what purpose. This is not the case with Tejas. It is still a evolving platform. You don't go around & buy a jet because you like it's look. You have to first make a strategy around it. How you are going to use it. What would be its role in your arsenal. What capabilities you want in it. These are few things which you have to decide first before ordering Tejas enmass.
On other hand while ordering a jet you don't just order the platform. You are ordering a whole infra along with it. Do you think the 50k crore which has been sanctioned for 83 jets is just for the platform? Even at the old price of 560crore per jet the total expenditure would have been around 46k crore. So why you think IAF objected to it?
Yes, there is a way to expedite the deal sign off of 83 Tejas. For that ADA & HAL has to complete all the weapon trial tests ASAP.