We usually think about free is totally free like just an airdrop. But actually, all of those things are not totally free. It is only a reward for completing a simple task. I don't think it is really encouraging but for those who did nothing, why not try? 

I could say that this is a good way to start earning in crypto for newcomers but just to remind them also that be sure that they are visiting the right/legit site otherwise, they are just wasting their time. And aside from that, we must not expect huge rewards.