I'll just say that there a lot of utterly misplaced arrogance from claimed iranian posters in regards to Iran military capabilities, especially aviation, directed at Russia or China. Especially the idea that Iran wouldn't need russian or chinese weapons like aircraft because of supposed internal capabilities. So far, actually aviation development have been one of the biggest failures in Iran, i've been following iranian aviation matters for almost 20 years, and through mismanagement and corruption apart from the useless Saeqeh and the truly embarrassing Qaher saga that wasted time, money and reputation what exactly has been achieved?
Actually useful upgrades for F-4, F-5 and F-14 have been cancelled or starved of funds or both, and the idea that a warmed up F-5/Kowsar can do much more than be an advanced trainer is uninformed to put it politely, even if they can manufacture the airframe entirely in Iran (which i still have my doubts about).
And the expectation/suggestion that any sort of claimed upgrade or advancement will magically appear in IRIAF overnight is disingenous at best. It takes time and money to translate that into service.
This is not to say that Iran didn't made some notable and competent advancements in other fields like SAMs or drones, but aviation is simply not of one of them.
So turning their nose at the chinese aviation industry who builds hundreds of some the most advanced fighters, electronics and missiles in the world every year, or at the russian aviation industry who still turns tens of very capable aircraft with top of the line electronics and missiles every year, is really either terribly misinformed, unjustifiably arrogant or someone intending to stir conflict between iranians and russian/chinese public.
I for one, if Iran gets serious about aviation and proceeds to upgrade in the next 10 years say 50 odd each F-4E Dowrans, F-14AMs, F-5E/ Kowsars, as well as the MiGs and Sukhois with or without external help, and perhaps manufacture a dozen or two extra Kowsar airframes, and couple of dozen Yasin trainers, AND crucially focus on getting modern missiles for the above, not just Fakkours, but AIM-7 and AIM-9 modernized developments, i would call that a very commendable achievement.
Getting even a few dozens of modern fighters from Russia and or China would be the icing on the cake. But getting hundreds would be ideal, if at all possible.
And if, IF they are really serious and commited, they work hard and they run the project well, perhaps in the 2030s we might see a decent iranian manned combat aircraft completed with decent electronics, weapons and engine, that can finally start to replace the existing airframes with an indigenous solution.