I don’t think Bitcoin or any other cryptocurrencies has to do anything with regard to people who are greedy. If a person is greedy, he is really greedy whether he/she has fiat money or cryptocurrencies. And most people want what they can’t afford too because of social media and so when they have a certain amount of money out of trading or whatnot they tend to get greedy and want more.
I agree with you and I too believe that greed is just a natural thing with humans it just so happen now that those of us that have greed now think there is an opportunity to even make quicker money and without thinking of the consequence, go over board in their investment and no reliable target for taking profits. .