In my native language this is even better. The word used for 'perfect' actually implicitly carries the notion of 'having been created perfectly'.
According JW theology Satan, Adam and Eve were all created perfectly. They could never undo that. They might become imperfect by their actions, but they would still have been created perfectly.
By claiming that Satan, Adam and Eve became imperfect, the words used in Dutch imply having been created imperfect'
Not that JW care about any of that....