Could you explain a bit more about what you mean by that? My interpretation is that even if you completed a bunch of BTC transactions in a way that allowed you to maintain anonymity, over time, new methodologies or technologies will allow future investigators to trace you as a real person through those old transactions. This? Or something else?
That's the just of it. Many of these public ledgers, like Bitcoin, form a massive transaction graph. Blockchain analytics tools and companies de-anonymize nodes in these graphs by matching real-world transactions to blockchain transactions.
And if you use a mixer or complex wallet setup to try and hide your identity, you are highlighting yourself in the future when more advanced analysis methods start to get used.
I worry that many people are confused by this, and don’t understand that this will continue to get eroded as time goes on for completed transactions.