Well, no wonder if you said like that because ETH going such a good performance on its value in the recent few months, particularly if the amount (in ETH) of the rewards are still the same as the previous version of bcgame. However if the contrary happens which is ETH going to the worse value I doubt you have still had the same thoughts as of now.

Anyway I don't think it's a bad decision at all moreover they combine it with bcswap feature there, so the users able to convert BCD to their desired coins anytime.