Every time, when you put your money into something instead of your stomach by food is gambling and speculation. Even banks are unsafe with a certain probability.
I alwais say risk must be covered with expected profits.
when you put your money into bank for 1% per year with 2% inflation and very low risk (but still some) is a good investment ?
When you put your money into crypto with expected profit 600-1000% per year with higher risk is a good investment?
It all depends on you.