Yes, you did misunderstand it. I was implying that if you give people ways to pay anonymously and they will use it for bad things. And there is no way of tracing the people doing bad things.
And yet this 'anonymous' payment method led straight to their doors with a piddling amount of detective work. It seems a lot of them sent BTC straight from exchange accounts linked to their IDs.
No doubt it has monetised disgusting behaviour in a way that wasn't possible before. It's likely in future it'll put more people like this away.