Thoughts to consider:
For New to Credit: What is their age? If they are above 35/40, what can be the reason they haven't needed to take any loans before? Are they being used as a proxy? Eg: husband applying on wife's PAN or Son's applying on parents' PAN...
If they are younger, what product are they applying for and what purpose? Credit cards, Education loans are straightforward. Personal loans for moving to a new city for jobs is also understandable. Else personal loan as the first credit product is kinda red flag.
Other take to consider: Credit experience matters. If someone is NTC, doesn't necessarily mean he is credit averse. Can mean that he might be over leveraged from informal sources or hiding his needs from his immediate society. Formal loans from digital apps are impersonal, avoids the shame letting everyone know your credit needs and softens the pain of application rejection.
Speaking from my very limited exposure being in my Bangalore bubble. Story might be completely different elsewhere.