Somebody makes money while somebody loses money, the market is always like this! No matter in what market, most people lose money, a few people in profit!
It depends on how much the money is as well. People dumping at loss are not making money but rather losing money. It might seem from your argument that everyone who is selling is at profit of bitcoin but in reality it is not so - why? Because of the panic sellers who think crypto is mighty ponzi and then dump all coins.
Not every one those who do transaction during the market is down then some time they suffers and i think that still they are not losing much because if not urgent i don't use the crypto for making transactions and if you do with out any policy or expert opinion then you will not lose money.
It all comes back to what price you bought the coin and what price you are selling at. Expert opinions will also say the same thing.
