I will not share darknet market links here because i don't know if its not against BTT rules but i can link you this article to prove that I didn't make it up:
https://www.ccn.com/hacked-customer-data-from-world-leading-cryptocurrency-exchanges-for-sale-on-the-dark-web/

And photo:


And if some may think that exchanges need photo with you holding a piece of paper with data than you need to know that 100$ is enough for fake ID.



So as I already said. Any restrictions will only disturb honest users. Every KYC, every coin holding if they are tailed with scam etc. Scammers will always find a way to scam and wash dirty money.