As strategic an asset as Kaan is, think like this, we still have F16 and F4. These are planes others have and know everything about. And are now outdated. F35 is also a plane others have and know a lot about, but if we had access to it we wouldn't have too many worries about the defense of our skies for most cases. So like, since we had no worries relying on such planes til yesterday, is others having access to Kaan going to be such a big worry now?
When we get Kaan it will be a massive upgrade, selling it to several others won't be that bad, countries around us already have access to Rafale, Eurofighter, F15 etc, which are superior to unupgraded F16. if they buy Kaan from us it creates some level of dependency on us as a bonus. And Kaan will likely be better for having sold more. They could eventually buy J35, Su57 or F35, would that be better?