With transparent blockchains, if the coins that you own can be traced to you, then it can later be observed if they move.  Publicly observed.  By anyone in the world who wants to watch.  (And if the coins cannot be traced to you, then this discussion is irrelevant.)  Lying about losses in any kind of an official context could usually result in hard prison time.

If you are susceptible to boating accidents, it would be tragic to HoDL a privacy coin.  Why, if you lose your keys, you cannot even provide your view keys on demand!  Such loss.

Not necessary with That Other Privacy Coin.

Bitcoiners have less to fear from boating accidents, and more to fear from getting hacked.  It is scary that your Microsoft Windows® machine is just one careless e-mail attachment click away from scrambling all of your data, and sending all of your money to heinous criminals who know how to make money disappear.  Don’t you wish that you had bought a hardware wallet?  Such grief!

Losing all that you own is very stressful.  Stress is bad for human memory (which is one of many reasons why you should not rely on long-term memorization of seed phrases or high-entropy passphrases with no backups—not for anything important to avoid losing!).  It only compounds the tragedy when traumatic stress makes it difficult even to remember exactly what you lost, and what you were doing with it right before you lost it.