You should read that article, now it might be that there are more accounts than I provided in the link but there are some issues here.
1. Why only take persons older than 18 into account, you know, most teenagers here have bank accounts.
2, in the link you provided it says that many of these accounts are dormant, 43% of accounts are dormant, they are not used or have zero balance on their account.
3. BOLD:
1. Legally they cannot enter into a contract, including a banking relationship until they are 18 years old.
2. https://www.pmjdy.gov.in/trend-zero