Despite the dubious results of the vote, I am sure that the majority buys cryptocurrency primarily because of its huge potential, technological and therefore money.
Exactly, crypto is a name of new technology of internet and we called it currency, it meant it is money. Now majority people start work with crypto because of investment point of view, and now it become a source of income on internet.
We can say a lot, but not majority of people, the amount of risk in crypto is very high so anyone who does not know it has to learn first before getting in the market.
A source of income? Maybe, but you need to have the skills to do that, whether you need to risk your money to grow it, or just work for money.
There are plenty of ways really, but as I've mentioned, you need to understand crypto first.