There is an ever-growing list here in Jameson Lopp's website:
https://github.com/jlopp/physical-bitcoin-attacks, reporting cases of physical attacks for crypto.
It's a huge problem and we should never discuss our holding with anyone, just like nobody would ever go out shouting "I have 15 Million USD in the bank".
Totally agree. I always was very private about my crypto holdings. Many people doesnt even know I invest in crypto.
Saying "I have 15 million USD in the bank" is much safer than saying "I have 15 million USD in bitcoin".
Because nobody can rob your 15 milllion from the bank. But from your wallet, it is very easy to rob...
Yes, in fact, many people in certain social circle don't have to say it to imply it through ostentation, but as bit mover just said, it is much more safe to say it when you don't have the direct custody of your funds.
On the other hand, I thought that only crypto millionaires would have that kind of problems, but looking at the numbers in the OP (especially the case of the 40k) I think that many holders are not entirely free of danger even if they don't have a great fortune inside their keys, if you accept the expression. Which is surprising because many cars are worth more than that, and I don't hear of people being extorted to take from them their car keys, except perhaps a very specific case.