They aren't necessarily held on wallets, right? That's just basically the tally of illegal BTC they found but said BTC has already spread over various wallets of others through mixers and other methods right? Well, not that I care much tbh. It's not like knowing about them changes the fact that they are illegal, and even if they were to be owned by me, it's not like I wouldn't be able to use it in the end. Plus, if they were able to send said coins to exchange and made me able to receive it, it already states that said coins are wiped clean, or even if it wasn't and just managed to slip the surveillance, then it isn't really my fault that it ended up on me. They can freely check transactions history for that after all.
These are all confirmed? I wonder how this site gathers the data to that they really know that the Bitcoin is used in relation to criminals. This is not a small amount of Bitcoin. but compared to the whole supply of BTC, it may be only several percentages. however, it will also influence the market flows if it hits the market.
I suppose they are confirmed, one way or another, or else they wouldn't list records of said illegal Bitcoins. That, or just a part of it is true, but it shouldn't deviate from that I suppose. It is a small amount, yes, but they could still influence the market albeit temporarily by dumping a huge number at one time.