If you use non-privacy chains, which are the common ones, you can get found out as soon as you try to do anything meaningful with it. Eg you move to some country, you want to buy a place, you find a seller willing to take crypto, ding-ding-ding, authorities will ask them where they got the coins from and there you are in your pool.

So, what you're saying is that some hackers are siphoning all the "funds" for no reason at all?

Or maybe, if they are hackers they can use/launder those in some way or another, but if this is SBF behind a mask then he can't?

I am far from an expert about money laundering techniques, but I find it hard to believe that it is impossible to launder, given the context.

There's probably something these guys know that ordinary HN people don't know about how to extract the money.

Perhaps there's a jurisdiction where it's made a lot easier.

You can use your many millions to move the market in small-caps and take your profits only from the other side.

They don't even have to know much. They will be approached by people who does.

Money laundering can be lossy and even very lossy, the result will always be better than zero.