i see, now i know why mostly don't want kyc when it come using exchanges for converting their crypto to fiat because someone can trace them easily or report them especially if they're very suspicious as well like thus two couple. 
and i wonder why these couples didn't even think about what will be the results afterwards before using an exchange that requires kyc because its a masive amount though.. Well its literally a epic fail for a fraud like them.
KYC is one of the ways used by exchanges to find out user data and overcome crimes such as fraud in crypto. Of course the pros and cons of KYC are many, but for those who don't want to use KYC it's their personal choice. and i wonder why these couples didn't even think about what will be the results afterwards before using an exchange that requires kyc because its a masive amount though.. Well its literally a epic fail for a fraud like them. Everything will be traceable even without using KYC, because transactions will continue to be recorded and will eventually find out where the money is finally going.
This is one way of exchange to battle frauds that's why we see the numbers of activities lessen on exchange as well in casino since some several casino are now implementing it. Mostly frauds happened in NFT now which ghost trades happen so I think maybe this will be one will taken action by government since for now anyone can easily get out a huge amount of money by buying what so called Nft to make things look legitimate.