Looking at the altcoins markets lately, the price within short time from listing on an exchange falls drastically below the ICO prices leaving the investors at loss for over a long period of time. Some ICO projects find it extremely difficult to recuperate from such loss of value.
Some project now take a caution which is believed to help the investors makes some earnings before the dumpers spoil the market. They now lock down the bounty and airdrop earnings for some period of time. This is aimed at stabilizing the market for such token before the activities of dumpers which are believed to be mainly the bounty and airdrop hunters.
I think a lock up may be ok and should be considered by the bounty hunters as a way to help out the ICO's. I do think they coins should be distributed to our wallets with a unlock date set in the contract. This would help easy hunters minds. If both sides work together we could all profit. There is to much rivalry between projects and hunters. The projects appear to really dislike hunters and I believe this causes some of the larger issues.