Agreed - it's a temporal mistake.  You make it innocently in the past, then years/decades later it can come back to haunt you.  For law enforcement, that's what makes the blockchain so attractive.  A mistake you made years ago (such as not using a mixer) can never be taken back - never be undone.  Another example will be quantum computing.  We will use quantum encryption to counter, but that document with those private records, the one you encrypted with old fashioned (current) encryption, is already untouchable on hundreds of hackers computers...

In crypto, you should adopt a philosophy of "only trust proof".  Ignore any claims that cannot be verified.

IMO, the best solution is:
- create a new identity for crypto activity
- build reputation based on that activity
- trust no one
- "stake" existing reputation if you want


(If you agree with this, and are an experienced HTML/CSS designer, please contact me ASAP)