It's greediness to keep holding your tokens when price is surging, many made the mistake in last bullrun season of 2017 and after February 2018 bears attacked the market dragging every single coins and tokens to its feet, Bear market is always the best time to buy coins and build portfolio and Bull market is the best time to make gains and take profits
I'm sorry dude, but not all holders who made a long term holding a coins are greedy. You can't blame them if they hold a coin for a years.
Because as long as your not selling it, that means your not yet lost. Due to there are other long term holders are ready to hold their coins even how many years it is.