Hello! I think my use-case was slightly different, inasmuch as it was purely cosmetic – I just wanted a way to attach a blingy top cap. A couple of years later however I can report it's still attached :)
My other option, which in hindsight will be far more practical than using the star nut would be to use a Hope Head Doctor, similar to the fsa bung someone mentioned in your thread.
Hello! I think my use-case was slightly different, inasmuch as it was purely cosmetic – I just wanted a way to attach a blingy top cap. A couple of years later however I can report it's still attached :)