So I'd counter that most BTC is purchased KYC--therefore, those coins are traceable.
And when they eventually make it into your wallet (no matter how circuitous the path), they'll be identifyable.
Worse still, is each transaction along the way is a taxable event, and the government will extract its pound of flesh from each.
AI makes all this efficient...and because the blockchain is public, all the data required for the analysis is available.
Mixing services...maybe, but I have little confidence that those are impervious to AI.
Essentially the origin of all coins is known (i.e. the original miner)- what's left is simply the legwork to trace their path across the different owners on the blockchain.
Conceptually similar to the old where's george on steroids...