Utxo management wasn't anything I saw people talking about, at least not when I got in. It's like a kid that got all these cool toys for Christmas but no one's telling him to clean his room and not leave them lying around everywhere to get stepped on and broken. The adults were just taking it for granted that the kid would keep it clean.

Utxo management is one of the first things people should be told about self-custodying bitcoin. It should be persistently hammered into their heads instead of being fear-mongered to "git yer coins off dirty exchanges."