And one thing we have to know is that in most cases the KYC is asked when we are withdrawing huge amount and not small amount.
Based on their terms & conditions they'll ask KYC if your turnover is higher than $30k, or you're suspected of fraudulent activity[1]. Multiple accounts and suspicious transactions linked to money laundering will get you flagged. You should probably read the previous discussion too since it discusses some parts of their ToS other than the KYC part. CMIIW.
[1]
https://niyvi.com/terms-of-use