Nothing developed in record time works.
The Pentagon is a prime example.
The “unveiling” seems to have been of a mockup for the purpose of drawing interest from potential foreign investors and customers. Russia does not seem to have an actual flyable prototype, let alone a production model. On balance, a Back to the Future type time machine in a DeLorean chassis is more likely to enter production than Russia’s claimed new model fighter.
I wonder why they have a sigh boasting “Continuous supersonic flight” written in English at their unveiling ???
Russia’s Checkmate Light Tactical Fighter Is Officially Unveiled (Updated)
After a much-hyped buildup, Russia’s latest fighter jet design has arrived on the international stage.
By Thomas Newdick July 20, 2021
Excerpt:
"Russian Deputy Prime Minister Yuri Borisov was in a bullish mood at MAKS, claiming that the core markets would be India, Vietnam, and in Africa, and projecting global demand for 300 examples of the fighter."