Do you know of similar cases?
In this modern time? Someone is still losing bitcoin through forgetting of password and seed phrase? That person is not serious and careless and I have not seen such unless hacked issues. He woul have tried to login with the password since so that would have known that problem. And if in case he changes mobile phone too, he can still access the Wallet. I discovered two things from the quote, "part/half of his bitcoin" meaning, it is not all the bitcoins were in one wallet, and secondly, "he didn't copied the seeds/password" what about the time he opened the Wallet? He must have copied it and misplaced it after using in to login and add the fingerprint.
Even with the global awareness and internet resources on how to secure our Bitcoins, people are still making silly mistakes to ensure the security of their assets. One thing I think is the cause of people losing their Bitcoin is ignorance, reluctancy, and laziness.
It feels like many people still don't value what they own. Not because they can afford to by some fractions, and more of Bitcoin means they shouldn't take it seriously. Imeeditately, the value gets bigger in the future, that is, when they will start posting on the internet so they can recover their wallet accounts.