Thanks for all the additional information, it does seem highly unusual that someone would go through all that manual obfuscation only to link his final spend into an exchange (Binance, for that matter) with unspent outputs from the original. Suppose no one's immune from noob mistakes, probably did a sweep from the wrong wallet.
This was just one example. He did several mistakes. Moving the coins from address to address in long chains and then crossing the chains which isn't smart. And there are a lot of little side transactions to exchanges. This might come from the fear that higher amounts attract more attention.
I think the idea is that nobody can follow this up in 200 steps depth in the blockchain because there are billions of paths. But I analysed patterns of these kinds of obfuscation behavior. They are totally different from a normal random transaction chain with 200 steps.