What I really mean is that we sit down in the same room. You bought the BTC for $1 in 2013. Today I give you $50k in $100 dollar bills, you send me your 1 Bitcoin. I am deliberately ignoring the current exchange rate to prove a point. What happened is that I overpaid by $15k, I immediately lost $15k on this transaction. You got a bargain and gained $15k on top of the $35k you would have gotten from simply holding onto your Bitcoin in this transaction.
jasonlaramburu says "When the price crashes money disappears." but there are still 500 $100 dollar bills in the room. The price "crashed" by $15k the moment I purchased the BTC but the money I gave you didn't disappear, it just changed hands in a very unfair manner.
You can expand the model to include all BTC buyers and sellers. It doesn't change the fact that US currency was devalued to generate an economic stimulus. A meaningful % of that stimulus was spent into 'the room.' The value of certain assets in the room was massively overstated and crashed. The stimulus money cannot be recovered, but Americans must live with the inflation and other impacts for many years.