I think as the Su-57 production base improves all the production will move to that aircraft type.
The Su-57 will be more expensive to operate than the Su-35, and many of its capabilities will not be needed for more than 50% of its missions.
It is the US that has made the mistake of trying to get an all stealthy fleet based around one aircraft, and their back pedalling proves even they realised that is wrong.
The Su-35 will be the first to be affected as it is a single seat aircraft. Contrary to what the article says I think in the medium term the production cost for it will be similar to the Su-57.
There will likely be more Su-35s and converted Su-30s carrying bits for the Su-35 and that will reduces costs and make maintenance cheaper and easier, while the Su-57 will have more capable and more exotic and more expensive components and its maintenance costs will be higher over its life span.... all three aircraft will remain a mere fraction of the operational costs of the F-35 let alone the B-2 or F-22.
The replacement of the Su-30 production line will likely require the introduction of a dual seat aircraft.
I doubt they will make a lot more two seat Su-30s for the Russian AF, the combination of Su-35 equipped Su-30s and Su-35s themselves is a formidable force and with the Su-57s together with S-70 drones and the entire IADS network of Russia behind it Russia is probably in a better defensive situation than any other country on the planet.
Add the MiG-31, and the MiG-35 and MiG-41s on the way and they are set.
It makes no sense to continue to procure the Su-35 once the Su-57 is available in numbers.
The Su-35 is the cheap and capable core of their air force it is perfectly fine for 90% of all jobs they will need it for and the Su-30 and Su-34 probably extends that up to about 93%.
The 7% of stuff a stealthy aircraft would be better at is what the Su-57 is for so they wont be needing 2-300 of those for that.
A lot of the effort with regards to existing suppliers will likely switch to Su-30SM2 upgrades instead of production of new aircraft.
They have essentially said that the Su-30s will be upgraded to share components and radar and engines and bits and bobs with the Su-35 so one radar type, one type of engine, etc etc, and where possible I would expect they will do the same with the Su-34 though perhaps a dedicated strike radar might be useful.
Once they have done that they essentially have two heavy Sukhois in use.. the 34 strike and the 30/35 two seat single seat fighter/bomber/interceptor.
The Su-30 could be called the Su-35UB.
The Stealth fighter was never to replace all Russian fighters, it has specific roles in specific situations... it might be their carrier fighter and they might make 250 of them, but it will never replace their Flankers.
I hope this is the case. I expect, however, that if they are struggling to ramp up production of the baseline 57, then this will delay any major airframe revisions and release of newer variants (which presumably would require major changes to the production lines and manufacture and supply of parts etc of their own)
What struggle.... you mean production during Covid was not optimal?
Production never starts out full pace high speed... they will be looking at their manufacturing processes and optimising and revising them to get improve efficiency and performance.
They really have no idea how many they might end up needing to build... no one knows.
The article sounds as if Russia would copy Washingtons procurement policy. In reality the morons in Washington wanted to re-equip the whole air force with "5. gen." fighters and only now buying lightly modernised old stuff because their new fighters turned out to be a piece of poop.
Wanted to say that myself.... the US plan was to replace all 4th gen fighters with 5th gen fighters... only now they realise it is not only not practical, but it is not affordable for a country that prints its own money like monopoly money.
The Russians have a policy of making both 4th gen and 5th gen fighters... they are upgrading Su-30s to Su-35 level and are buying Su-35s, and also have MiG-35s on order and are putting PAK FA into production and are starting to fund LMFS development too.
Nothing is set in stone and all bets are covered... stealth too expensive and not effective... they can leave it at 76 Su-57s and work on Su-35Ms and MiG-35Ms.
Stealth affordable then they might stop buying MiG-35s and buy more LMFS when it is ready...
Russia is a huge place with a variety of local threats and issues... there are lots of places where the Su-35 is ridiculously too big and long ranged where they could put MiG-35s instead.
It turned out in India only.
APG-82(V)1 has about half the range, tracking, and guiding abilities of N035
Turkey said the S-400 was even better than the Russians promised in terms of range and performance of the sensors, but the real problem is that while western gear does not always live up to expectations, it is certainly expensive for what it is most of the time...
No refunds...