No, it doens't mean that.
You can be regulated you can claim to be AML compliant but you can do a lot of shit like everyone is doing, not just cryptos, all companies that are involved in financial transactions will at one point break at least once, when the pile of the money goes too high there is always the temptation of getting more for yourself.
There are legal AML requirements and procedures and these exchanges complied with them. Such is one of the reasons why they successfully obtained license from no less than the central bank. Of course, it doesn't mean that since they are AML-compliant there's zero laundering happening on their platforms. The same is true with the banks. They're also AML-compliant and they, too, are central bank-licensed, but it doesn't mean that there are no laundering activities happening in their system. That's why there's constant coordination with authorities in terms of suspicious transactions.