All investors are not like that and a little greed is natural keeping in mind the amount of money and returns involved. Issue is that a lot of inexperienced people have also joined the bitcoin community. They started investing in bitcoins thinking of it as a quick rich scheme. Whenever there is a  fake news, they do not verify it and start selling all their holdings.

The amount of profits that people make by investing in cryptocurrency is very very high. So being greedy for more in my opinion is no offence from the investors side.
With a little of money also people could invest in crypto and make huge profits in return.

They have no confidence in their investments, just getting some news to get scared of them, so they start selling. When good news comes out, they buy it right away, and their existence is often harvested. Playing Cryptocurrencies Most of the time you need patience, you have to learn to tell what's true in the end, what's a fake message, and you can not completely believe it's something that you can easily get.

The market is definitely volatile and investors expect substantially higher returns compared to other asset classes. That is natural, because higher risk investments are expected to give high returns. I wouldn't call them greedy for that. They are just investors, with high risk appetite. There are others who try to gamble in the crypto markets and buy/sell on the latest fud and positive news articles. You cannot really attribute rationality to their behaviour.

Bitcoin's price will never be stabilize as it is running on a decentralized system where governance does not exist, no regulation and laws applied. I think people and investors are just playing it safe because the spike from last year is expected to have a downfall afterwards which happened earlier this year. Don't worry the price will rise i think in the 2nd quarter of the year.

no investor is Dumb and Greedy - they take calculative risks to gain on any investment, I guess you are mentioning some stupid people who bet their money on anything just for some rumors of high gain (scams) and starts crying when they see a dip or loss. those people are not investors, those are just some everyday stupid and greedy people.

LOL I don't even know what the Binance FUD was, I never heard it...
and please stop looking at and reporting market cap, it is meaningless numbers you are posting here. it doesn't show anything when it goes up and down it is partly coincidence that it happens with price drops and partly because of the price drop itself.
you see market cap can easily go up and down. for example whenever they create a new bitcoin fork they usually start at somewhere around $1000 and that means market cap increases by $16,800,000,000 ($16.8 billion dollar) in a blinking of an eye. and then as that useless forkcoin gets dumped lets say to $10 which is the common bottom of these shitcoins, market cap loses as much and goes down to $168 million.

Here's the Binance FUD referred by the OP, I think. It happened just yesterday.
https://www.reddit.com/r/helloicon/comments/82p8fo/binance_accounts_got_hacked/

I don't think "greedy" should be the exact term. Maybe, impatient, highly-reactive or easily-fooled-by-fake-news will do. Because of them, the "sale" is being extended.

The "love" of the encrypted currency and the "love" of the market are many characteristics shared by many investors, but "love" turns out to be "greedy." So let it go when you let it go.