There you go. This is why committing insider NFT trading using a public blockchain where the transactions are traceable where the authorities can use that and the transactions all end up being connected to this employee (even though they tried using multiple wallets) is quite futile and eventually they can be traced all up.
Goes to show that such blockchains like Bitcoin, Ethereum, etc are NOT anonymous and never intended it to be as such in their white-papers. So it's quite disingenuous for anyone to keep suggesting that they are 'anonymous' whether or not if they are skeptic, supporter or neither.
What you are looking for is privacy coins like Monero, Mobilecoin, Zcash or Grin that specifically aim for privacy guarantees which are used to hide wallet balances and transaction details. But the regulators are going to crackdown on privacy ones anyway by making it harder to trade them for fiat via exchanges.