I dont think its retarded, its just marketing strategy ... if they are success they will stop this 200 % bonus soon ...

and if they grow big enough, lets say to similar position as bitcoin is - market cap - 11 Milions bitcoin x 90 usd ... its plenty of usd, they wont care they gave away 10 000, 50 000, 500 000 usd at the beggining in their advertisement campaign.

Bitcoin also started as a silly project with a silly "mining" ... you could buy 1 Btc for 0.1 Usd ... and few lucky and "retarded" ones did ... and right now they have 900x more for their investment