Those who are not doing any analysis are not a trader at all, they most likely a buyer and seller with no trading experience at all. Its ok to be greedy but have that trades using your own strategy and analyze the price trend first, usually traders don’t buy new tokens they wait for the trend to appear before buying. Being greedy is too risky, it can cost you a lot if you do it carelessly, have some time to reflect before buying anything, this is cryptomarket and this market is very risky and too volatile.
I really believe in diversification of activities within crypto currency such as ICO's or exchanges like Bittrex etc. its also something I consider extremely important when investing (not being aware my money) so while everyone invests blindly i highly recommend starting small by playing around here on bittorrent instead…