They will be frozen only till they declare what conditions you need to fulfill to unlock them. You need to use them on their own exchange after completing KYC and some more requirements.
Interesting marketing strategy to get people to sign up for an exchange, I have a feeling as those tokens start to get unfrozen the value will drop quite a bit.
I don't think it will drop drastically as most users who have received the tokens may not even try to get them unlocked as KYC requirements need to be fulfilled.