I disagree with that. He is a Singapore-Born Singaporean
therefore it is mandatory for him to serve NS. But however, if he
isn’t born in Singapore but obtain Singapore Citizenship due to
DESCENT, then i feel that it is extremly
unfair to punish him as firstly, he does not belong to Singapore
and secondly, he left at 12 years old. And furthermore, he
DOES NOT need to discharge his NS liabilities
if he wants to renounce his citizenship later on, in fact, the
Singapore government would automatically “cancel” him if he did not
take the OATH by 21 years old.