Only if you're not in your right mind would you trade diamonds for copper lol.
That's true, but if a person has the skills and the capital to trade for copper, then return with more diamonds, why not make the trade?
If Bitcoin is to be money, use it as money. HODL it, trade it, spend it, lose it, earn it.

Personally, I neither have the skills nor the willingness to take any risk. But to those who do it and do it successfully, I tip my hat.
That's the problem. As I said in the previous article, I also do not prohibit if someone really wants that but in other conditions of course in this case we must be aware of our capacity and if you are not able to do that then do not have high expectations, especially doing crazy things like exchanging bitcoin and switching to altcoins in the hope of higher returns after that you can buy bitcoin again with a larger amount of money.