Question: Why is it inadequate to reduce resurrection, reckoning and the balance to moral metaphors?
Answer: These are affirmed realities of the Hereafter. Recompense, accounting, the balance and the bridge are distinct matters, each established by its own teachings.
ثُمَّ إِنَّكُمْ يَوْمَ الْقِيَامَةِ تُبْعَثُونَ
Then you will be resurrected on the Day of Resurrection.
Follow-up: Are all details of their exact manner known now?
Clarification: No. The established realities are affirmed while unsupported claims about their precise manner are avoided. The essential consequence is accountability.