Again You are mixing instability and relaxed stability.
instability would make the plane depart itself from its velocity vector
relaxed stability is implemented in the design but ctrl the plane trough a computer. And there is a raison to that.
Exemple :
Stable or FBW stable F16 Rookie pilot: 400Kts, pull 6G -> Black out -> the plane unload by itself. Pilot woke up 10 sec after safely
Taildraggernut design instable "NutShark Uber Killer 2121" aircraft with Tomcat pilot : 400kts, pull 6G, Black out -> the plane continue to tighten the turn untill what remain of Tomcat'brain is crushed. Pilot CTG 10 sec latter.
Note:
- The 27 does not have FBW implemented. Only latter vers have pitch ctrll.
- Good luck trying to teach NATO or US fighters pilots that the 29 is obsolete. You might have the same kill rate ratio as them in BFM
