In the cited document, look at pages 24-25, the section "LIN’s Crypto Account-1 Received Marketplace-1 proceeds." In those proceedings, they show -- through a trace -- that Lin converted criminal proceeds into monero and then withdrew them to a monero wallet and then sent them to a KYC'd exchange to sell them. They document 4 traces in subparagraphs i, ii, iii, and iv where he did this and they outline the technique they used to perform the trace. Then, in subparagraph vi, they state that they got Lin's identity because the exchange where they traced the money to had his KYC data, namely, his mobile number, his email, and his driver's license. That is a trace where the identification and arrest of the target happened after, and due to, tracing monero.

If that's the case then it still has nothing to do with the feds tracing Monero, but instead is about using KYC exchanges i.e bad OPSEC. Even the most anonymous cryptocurrency will not protect you if you KYC yourself.

No it absolutely does NOT say that. Subparagraph vi says: "vi. Documents from the provider of Crypto Account-1 indicate that its user provided Phone Number-1 as his mobile number, Lin Personal Email Account-1 as his email address, and the below pictured Taiwanese Driver’s License as proof of identity. The below Taiwanese Driver’s License, with redactions applied over certain identifying information, lists an address in Taipei, Taiwan and the name is “林睿庠,” which is the Mandarin language spelling of “Rui-Siang Lin.” In addition, the Taiwanese Driver’s License listed the driver’s license number for “林睿庠,” (“License Number-1”)." Nowhere in the document does it claim they got his identity from tracing Monero. In fact, according to this, you can't know if they traced Monero AT ALL, since it just states that he made swaps through to a CEX that had his KYC. They make ZERO claim they had this information BEFORE they had access to his wallets. You're lying for clout again.