Actually you're completely off-mark here. As per current HAL chief going for Su-57 is a complete GOI decision. So all the talks that happened between HAL & UAC was at the behest of GOI.You've misread it. What's in the tweet there is actually what I've been saying. HAL's talks with Russia are useless, it has to be approved by MoD, and there's no approval.
So there's nothing happening with the IAF on this front.
IAF is asking for something the Russians cannot provide, ie, training an IAF pilot on the Su-57M1 so it can be evaluated in India; Rajasthan and Leh. That's been the requirement since 2017, which the Russians have denied permission for. By asking for the impossible, the IAF is showing no intention of going for the Su-57. It's a dead-end program for the IAF.
Now what's necessary is for the Russians to finish the development of the two-seat and then give IAF pilots a backseat ride. But by the time this happens, ie, two-seat achieving operational capability and with the Izd 30 (very important), AMCA will already be flying and IAF would have made a decision on SCAF/GCAP, plus the Chinese would be flying 6th gen J-XX.
At this point, the Su-60 will have to show extraordinary value beyond what the AMCA provides because IAF will have to justify duplicating AMCA's capability at a cost that rivals or more than rivals India's participation in SCAF/GCAP and the contract value of AMCA. It means Su-60 will have to duplicate the capabilities of SCAF/GCAP to have any value to the IAF.
So new competition between SCAF, GCAP, Su-60, and maybe F-47.
And IAF is not interested? Lol. If IAF was not interested then UAC team would have never visited the HAL Nashik plant. GOI doesn't negotiate with any OEM until IAF says, yes. You, of all the people, know all about this.

