Those people were using bitcoin for it’s
Purpose, bitcoin was created to serve as alternative currency, and those people were gambling with their bitcoin, so they were helping bitcoin during that period. The reason why they were gambling with so much bitcoin then was just because bitcoin price was still so cheap, and they were able to accumulate much bitcoin at that moment, so it’s really a huge amount of money now, but it might not be so much then.

You saying maybe those people don’t know bitcoin future value, I agree with you because most people don’t believe in bitcoin when the price was still so low, but you should know that people that gambled with bitcoin definitely win some bitcoin, do you know if they decided to hold the bitcoin which they won?