Unfortunately, that suspicion could easily arise from as simple a case as a change of IP address
~snip~
It sucks, really! All these terms and conditions that are totally opposite to the very philosophy of Bitcoin. It seems these large crypto institutions themselves are the ones tearing down the very fundamental features of Bitcoin.
Yes, this won't be the last case. That's for sure. Neither will Binance be the last of this kind of scammy site. Gambling sites come to mind first, marketing their non-KYC feature all around but ask players for it all of a sudden.
If they find anything suspicious, they have the right to ask KYC even if user have lower amount of withdrawal than 2 BTC.
If you refuse to provide KYC, then your coins should be returned to the address they were deposited from.
1. Unfortunately, the terms of use of Binance stipulates that:
[1]With registration of an account on Binance, you agree to share personal information requested for the purposes of identity verification.
This is of course a bit vague as a user might think that he/she could totally avoid this if he/she stays within the 2-BTC non-KYC limit. But then it appears to be a blanket condition to
all accounts. And that particular request from Binance may unexpectedly arrive at your email inbox anytime.
2. Returning the coins to the address they came from might not solve the problem. As a matter of fact, it might make it a little more complicated because that transaction might actually be a totally different one. For example, I sometimes give my Binance BTC address to some of my random BTC borrowers.
[1]
https://www.binance.com/en/terms