I wouldn't argue or doubt this cos most of their promotions and giveaways have been in real fiat other than their tokens. These are stuffs most projects don't consider. I've won some project contest that became completely useless cos I couldn't cashout in real fiat.
Like they said, its a fund for your project not just a reward. Its a gift to the winners so they could go on and make their dreams come true. Its not money for their purse or a free gift or money they could invest in a different project not even in Dreamr.
So I guess this has to be in some easily liquidated currency. And bitcoin would do that better than gift cards would.
Let's not deceive ourselves, most of the persons sharing their dreams on the thread are only concerned about the financial reward and not their dreams. Even if the reward was reduced to an amount far lesser than what it is presently, they would still participate. If you can check closely, you'll find out that the $250 can barely finance most of the dream on the thread.
This makes this project more great with this kind of event they have more people like to participate in it because they giving fiat so that winners can appreciate the price instantly. If they can do this right now I think they can make more dreams come true in the near future.