I read the word "noobs" a lot around these forums, and there seems to be what I suspect is a very wrong assumption that only "noobs" buy and sell at terrible times. A lot of big losers dabble at crypto or just watch bitcoin and other coins a long time, but get in after the pump has gone too far.
Like I said I've no idea what everyone's circumstances are but that particular user's - account at least - has been present for two full bubbles, from $150 to $1200 and back to $150 then $20,000.
Somewhere in there you'd hope that $6500 meant being above break even after half a decade.
Talking about greed, people will probably wait for ath and sell everything then the bubble will burst out. Hence, selling on top will br their goal.
No one sells at the top apart from a tiny handful of people. Most others are too greedy and hang on all the way down.
I can see most daytraders getting their asses handed to them in 2017. Hodlers are still hodling. And the game continues....